Items won't add to collection

[Harblar 29]

So I got a weird issue. My Collection for the movie series Aliens won't add Alien 1-4 to the collection. They were at one point, but after some update to emby server (not sure which one) they've been displayed in the regular movie list instead of nested under the alien collection. I try to manually add them to the collection and emby says it added it, but nothing changes. The collection image shows 5 discs overlayed on it, but it only contains one film. All 4 films it won't add are multi-version films (Theatrical and directors cut), but I have several other collections setup similarly with no problems. I've attached a log after a fresh restart in which I tried manually adding  Alien to the Alien collection. Maybe that'll shed some light on it, because I'm totally at a loss right now. :\

 

Log (1).txt

[Luke 42085]

Please try again with the next release of emby server. Thanks.

[Luke 42085]

Support for nested collections is in beta:

https://emby.media/community/index.php?/topic/57471-33110-nested-collections/?hl=nested