diff --git a/htdocs/eventorganization/class/conferenceorbooth.class.php b/htdocs/eventorganization/class/conferenceorbooth.class.php
index e1af900371d..8d12fcd4da5 100644
--- a/htdocs/eventorganization/class/conferenceorbooth.class.php
+++ b/htdocs/eventorganization/class/conferenceorbooth.class.php
@@ -106,8 +106,8 @@ class ConferenceOrBooth extends ActionComm
 		'id' => array('type'=>'integer', 'label'=>'TechnicalID', 'enabled'=>'1', 'position'=>1, 'notnull'=>1, 'visible'=>0, 'noteditable'=>'1', 'index'=>1, 'css'=>'left', 'comment'=>"Id"),
 		'ref' => array('type'=>'integer', 'label'=>'Ref', 'enabled'=>'1', 'position'=>1, 'notnull'=>1, 'visible'=>2, 'noteditable'=>'1', 'index'=>1, 'css'=>'left', 'comment'=>"Id"),
 		'label' => array('type'=>'varchar(255)', 'label'=>'Label', 'enabled'=>'1', 'position'=>30, 'notnull'=>0, 'visible'=>1, 'searchall'=>1, 'css'=>'minwidth300', 'help'=>"Help text", 'showoncombobox'=>'1',),
-		'fk_soc' => array('type'=>'integer:Societe:societe/class/societe.class.php:1:status=1 AND entity IN (__SHARED_ENTITIES__)', 'label'=>'ThirdParty', 'enabled'=>'1', 'position'=>50, 'notnull'=>-1, 'visible'=>1, 'index'=>1, 'help'=>"LinkToThirparty", 'picto'=>'company', 'css'=>'maxwidth500'),
-		'fk_project' => array('type'=>'integer:Project:projet/class/project.class.php:1:t.usage_organize_event=1', 'label'=>'Project', 'enabled'=>'1', 'position'=>52, 'notnull'=>-1, 'visible'=>-1, 'index'=>1, 'picto'=>'project'),
+		'fk_soc' => array('type'=>'integer:Societe:societe/class/societe.class.php:1:status=1 AND entity IN (__SHARED_ENTITIES__)', 'label'=>'ThirdParty', 'enabled'=>'1', 'position'=>50, 'notnull'=>-1, 'visible'=>1, 'index'=>1, 'help'=>"LinkToThirparty", 'picto'=>'company', 'css'=>'tdoverflowmax150 maxwidth500'),
+		'fk_project' => array('type'=>'integer:Project:projet/class/project.class.php:1:t.usage_organize_event=1', 'label'=>'Project', 'enabled'=>'1', 'position'=>52, 'notnull'=>-1, 'visible'=>-1, 'index'=>1, 'picto'=>'project', 'css'=>'tdoverflowmax150 maxwidth500'),
 		'note' => array('type'=>'text', 'label'=>'Description', 'enabled'=>'1', 'position'=>60, 'notnull'=>0, 'visible'=>1),
 		'fk_action' => array('type'=>'sellist:c_actioncomm:libelle:id::module LIKE (\'%@eventorganization\')', 'label'=>'Format', 'enabled'=>'1', 'position'=>60, 'notnull'=>1, 'visible'=>1, 'css'=>'width300'),
 		'datep' => array('type'=>'datetime', 'label'=>'DateStart', 'enabled'=>'1', 'position'=>70, 'notnull'=>0, 'visible'=>1, 'showoncombobox'=>'2',),
diff --git a/htdocs/eventorganization/class/conferenceorboothattendee.class.php b/htdocs/eventorganization/class/conferenceorboothattendee.class.php
index f619b5459c3..4cb5cfc7cea 100644
--- a/htdocs/eventorganization/class/conferenceorboothattendee.class.php
+++ b/htdocs/eventorganization/class/conferenceorboothattendee.class.php
@@ -103,9 +103,9 @@ class ConferenceOrBoothAttendee extends CommonObject
 	public $fields=array(
 		'rowid' => array('type'=>'integer', 'label'=>'TechnicalID', 'enabled'=>'1', 'position'=>1, 'notnull'=>1, 'visible'=>0, 'noteditable'=>'1', 'index'=>1, 'css'=>'left', 'comment'=>"Id"),
 		'ref' => array('type'=>'varchar(128)', 'label'=>'Ref', 'enabled'=>'1', 'position'=>10, 'notnull'=>1, 'visible'=>2, 'index'=>1, 'comment'=>"Reference of object"),
-		'fk_soc' => array('type'=>'integer:Societe:societe/class/societe.class.php:1:status = 1 AND entity IN (__SHARED_ENTITIES__)', 'label'=>'Attendee', 'enabled'=>'1', 'position'=>50, 'notnull'=>-1, 'visible'=>1, 'index'=>1, 'help'=>"LinkToThirparty", 'picto'=>'company', 'css'=>'maxwidth500'),
+		'fk_soc' => array('type'=>'integer:Societe:societe/class/societe.class.php:1:status = 1 AND entity IN (__SHARED_ENTITIES__)', 'label'=>'Attendee', 'enabled'=>'1', 'position'=>50, 'notnull'=>-1, 'visible'=>1, 'index'=>1, 'help'=>"LinkToThirparty", 'picto'=>'company', 'css'=>'tdoverflowmax150 maxwidth500'),
 		'fk_actioncomm' => array('type'=>'integer:ActionComm:comm/action/class/actioncomm.class.php:1', 'label'=>'ConferenceOrBooth', 'enabled'=>'1', 'position'=>53, 'notnull'=>0, 'visible'=>0, 'index'=>1, 'picto'=>'agenda'),
-		'fk_project' => array('type'=>'integer:Project:projet/class/project.class.php:1', 'label'=>'Project', 'enabled'=>'1', 'position'=>54, 'notnull'=>1, 'visible'=>0, 'index'=>1, 'picto'=>'project'),
+		'fk_project' => array('type'=>'integer:Project:projet/class/project.class.php:1', 'label'=>'Project', 'enabled'=>'1', 'position'=>54, 'notnull'=>1, 'visible'=>0, 'index'=>1, 'picto'=>'project', 'css'=>'tdoverflowmax150 maxwidth500'),
 		'email' => array('type'=>'mail', 'label'=>'Email', 'enabled'=>'1', 'position'=>55, 'notnull'=>1, 'visible'=>1, 'index'=>1,),
 		'date_subscription' => array('type'=>'datetime', 'label'=>'DateOfRegistration', 'enabled'=>'1', 'position'=>56, 'notnull'=>0, 'visible'=>1, 'showoncombobox'=>'1',),
 		'amount' => array('type'=>'price', 'label'=>'AmountPaid', 'enabled'=>'1', 'position'=>57, 'notnull'=>0, 'visible'=>1, 'default'=>'null', 'isameasure'=>'1', 'help'=>"AmountOfSubscriptionPaid",),
diff --git a/htdocs/eventorganization/conferenceorboothattendee_card.php b/htdocs/eventorganization/conferenceorboothattendee_card.php
index 4206b802be3..bae8da29d24 100644
--- a/htdocs/eventorganization/conferenceorboothattendee_card.php
+++ b/htdocs/eventorganization/conferenceorboothattendee_card.php
@@ -48,7 +48,7 @@ $backtopageforcancel = GETPOST('backtopageforcancel', 'alpha');
 
 $conf_or_booth_id = GETPOST('conforboothid', 'int');
 $fk_project = GETPOST('fk_project', 'int');
-$withproject = GETPOST('withproject', 'int');
+$withproject = 1;
 
 // Initialize technical objects
 $object = new ConferenceOrBoothAttendee($db);
@@ -65,6 +65,7 @@ if ($conf_or_booth_id > 0) {
 	} else {
 		$object->fk_actioncomm = $confOrBooth->id;
 		$object->fk_project = $confOrBooth->fk_project;
+		$fk_project = $object->fk_project;
 	}
 }
 
diff --git a/htdocs/eventorganization/conferenceorboothattendee_list.php b/htdocs/eventorganization/conferenceorboothattendee_list.php
index d51a9014afb..10cbd33378b 100644
--- a/htdocs/eventorganization/conferenceorboothattendee_list.php
+++ b/htdocs/eventorganization/conferenceorboothattendee_list.php
@@ -646,22 +646,25 @@ if ($limit > 0 && $limit != $conf->liste_limit) {
 foreach ($search as $key => $val) {
 	if (is_array($search[$key]) && count($search[$key])) {
 		foreach ($search[$key] as $skey) {
-			$param .= '&search_'.$key.'[]='.urlencode($skey);
+			if ($skey != '') {
+				$param .= '&search_'.$key.'[]='.urlencode($skey);
+			}
 		}
-	} else {
+	} elseif ($search[$key] != '') {
 		$param .= '&search_'.$key.'='.urlencode($search[$key]);
 	}
 }
 if ($confOrBooth->id > 0) {
-	$param .= '&conforboothid='.urlencode($confOrBooth->id).$withProjectUrl;
+	$param .= '&conforboothid='.urlencode($confOrBooth->id);
 }
 if ($projectstatic->id > 0) {
-	$param .= '&fk_project='.urlencode($projectstatic->id).$withProjectUrl;
+	$param .= '&fk_project='.urlencode($projectstatic->id);
 }
-
+$param .= $withProjectUrl;
 if ($optioncss != '') {
 	$param .= '&optioncss='.urlencode($optioncss);
 }
+
 // Add $param from extra fields
 include DOL_DOCUMENT_ROOT.'/core/tpl/extrafields_list_search_param.tpl.php';
 // Add $param from hooks
@@ -694,6 +697,8 @@ print '<input type="hidden" name="action" value="list">';
 print '<input type="hidden" name="sortfield" value="'.$sortfield.'">';
 print '<input type="hidden" name="sortorder" value="'.$sortorder.'">';
 print '<input type="hidden" name="contextpage" value="'.$contextpage.'">';
+print '<input type="hidden" name="withproject" value="'.$withproject.'">';
+print '<input type="hidden" name="fk_project" value="'.$fk_project.'">';
 
 $newcardbutton = dolGetButtonTitle($langs->trans('New'), '', 'fa fa-plus-circle', DOL_URL_ROOT.'/eventorganization/conferenceorboothattendee_card.php?action=create'.(!empty($confOrBooth->id)?'&conforboothid='.$confOrBooth->id:'').(!empty($projectstatic->id)?'&fk_project='.$projectstatic->id:'').$withProjectUrl.'&backtopage='.urlencode($_SERVER['PHP_SELF'].'?projectid='.$projectstatic->id.(empty($confOrBooth->id) ? '' : '&conforboothid='.$confOrBooth->id).$withProjectUrl), '', $permissiontoadd);
 
diff --git a/htdocs/modulebuilder/template/myobject_list.php b/htdocs/modulebuilder/template/myobject_list.php
index 2d7b89505bf..3a0237dd144 100644
--- a/htdocs/modulebuilder/template/myobject_list.php
+++ b/htdocs/modulebuilder/template/myobject_list.php
@@ -414,9 +414,11 @@ if ($limit > 0 && $limit != $conf->liste_limit) {
 foreach ($search as $key => $val) {
 	if (is_array($search[$key]) && count($search[$key])) {
 		foreach ($search[$key] as $skey) {
-			$param .= '&search_'.$key.'[]='.urlencode($skey);
+			if ($skey != '') {
+				$param .= '&search_'.$key.'[]='.urlencode($skey);
+			}
 		}
-	} else {
+	} elseif ($search[$key] != '') {
 		$param .= '&search_'.$key.'='.urlencode($search[$key]);
 	}
 }
diff --git a/htdocs/public/eventorganization/attendee_register.php b/htdocs/public/eventorganization/attendee_register.php
index e8909d91814..2a207877c01 100644
--- a/htdocs/public/eventorganization/attendee_register.php
+++ b/htdocs/public/eventorganization/attendee_register.php
@@ -493,9 +493,13 @@ if (empty($reshook) && $action == 'add' && (!empty($conference->id) && $conferen
 					$confattendee->error = $facture->error;
 					$confattendee->errors = $facture->errors;
 					$error++;
-				} else {
+				}
+
+				/*
+				if (!$error) {
 					$facture->add_object_linked($confattendee->element, $confattendee->id);
 				}
+				*/
 			}
 
 			if (!$error) {