Please help me with the following problem:

I try to construct the current status of a series of objects along the following simple rules:

•  the current status of on object with a certain `identificatie` (id) is the newest version of that object
• except when the newest object has the property `<status>beëindigen</status>` then the object stops existing.
  

I use a fold-left to proces these rules with a simple function implementing those rules. This gives me unexpected results.

I've reduced the problem to a single stand alone query in which the last object (`obj3`) has the property `<status>beëindigen</status>`.

So I would expect this line:
    `let $stand4 := fold-left(($obj3, $obj2, $obj1), (), function($stand, $obj) { local:stand-totaal($stand, $obj) })`
to give me an empty result as `obj3` has the property <status>beëindigen</status>
but I am getting `obj1` as demonstrated in the following stand alone query.

When running the stand alone query I would expect:

 
    declare function local:stand-totaal
      (: returns an object by comparing new to old :)
      (: newest should be returned, except when
         <ow:status>beëindigen</ow:status>
         then no object should be returned :)
      ($new as item()*,
       $old as item()*) as item()* {
         
       let $new_ids := local:id($new)
       let $stand_deel1 :=
         for $obj_oud in $old//*:owObject
           where not(local:id($obj_oud) = $new_ids)
             return <sl:stand>{ $obj_oud }</sl:stand>
       let $stand_deel2 :=  
         for $obj_new in $new//*:owObject[not(.//*:status)]
            return <sl:stand>{ $obj_new }</sl:stand>
           
       return ($stand_deel1, $stand_deel2)
    };

From your comment and explanation I kind of would expect a check for that particular value

     <ow:status>beëindigen</ow:status>

but that value is not checked for or mentioned at all in the XQuery code.