Why have so many strange attributes appeared in Attribute Manager?

[Van Tan Nguyen]

This is our file that was shared on Bimcloud. Suddenly, one day, many strange attributes appeared, causing our file to lag and sometimes break down. We have tried many ways to solve this problem. We took the file offline and deleted all the strange attributes. It stayed clean for a while, but the next day, the attributes came back. Do you know about this problem and how to solve it?

 

[Lingwisyer]

Are those layers? Makes me think that you have imported something saved out of a program that does collision detection and versioning... So you delete them, but once your file updated the external reference, they all get populated again. FYI, I have no experience with BIMCloud or Teamwork.

Ling.