Filter is kept after saving workflow

lib/mvcfronk/mfBase/mfBaseController.php

@@ -207,22 +207,27 @@ class mfBaseController {
       }
     }*/
     
-    if(is_array($params) && count($params)) {
-      $url .= (MFUSEFANCYURLS) ? "/?" : "&";
-			foreach($params as $k => $v) {
-        $v = urlencode($v);
-        
-        if($k) {
-          $k = urlencode($k);
-          $url .= "$k=$v&";
-        } else {
-          $url .= "$v&";
-        }
-			}
-      
-      $url = preg_replace('/&$/', '', $url);
+    if($params) {
+
+	    if(is_array($params) && count($params)) {
+	      $url .= (MFUSEFANCYURLS) ? "/?" : "&";
+				foreach($params as $k => $v) {
+	        $v = urlencode($v);
+	        
+	        if($k) {
+	          $k = urlencode($k);
+	          $url .= "$k=$v&";
+        	} else {
+	          $url .= "$v&";
+	        }
+				}
+	      
+	      $url = preg_replace('/&$/', '', $url);
+	    } else {
+		    $url .= (MFUSEFANCYURLS) ? "/?" : "&";
+		    $url .= $params;
+	    }
     }
-    
     if($anker) {  
       $url.="#$anker";  
     }