Associated Entity instance is deleted from datatbase

I have an application in which there are 2 entities associated with 1:1 link and no delete behaviour. Everything works fine untill the restart my modeler and i see that the references entity instance is deleted but the other entity instance remains. This I observed by doing a select * query on the associated entity table in Built-in database manager. Does anyone of you have any idea on what could be the reason?
1 answers

Are you ever actually committing the associated entity? If not they might have the auto-committed status and then they'll be removed if they never actually are committed before shutting down the server or logging out the session that created them.

Also see this question (or rather, my answer) about auto-committed objects.