Imports and sync rules will create duplicate objects

Hi there,

I have some imports and also a number of sync rules for hostgroups, hosts, service-sets and services in my automation, which are working fine in general. If I check for changes sometimes it tells me there are some. Even if I dont re-run the corresponding imports, the sync rule shows up with changes. Already deployed changes would be created once again which fails because of duplicate entries. I couldnt figure out why this happens. This problem is preventing me to take the setup productive, because I can not automate the imports and sync rules.

The imports behave similar, sometimes they show up with changes directly after an import run.

Any help is welcome!

Best regards, Christian