missing collaboration object
When I try to import a bpmn file into the modeller I get an error messag "There is a missing collaboration object" (picture 1) and cannot import the file. It probably relates to another issue, which is that there is a reference to a proces file in the online model (picture 2), which doesn't exist when I open the model in the modeller (picture 3). I tried to delete some processes in these folder and I think there must be an old reference, that hasn't been deleted in the online model. Can you help with a solution? Is there a way to delete the reference to the old proces in the online model?