Project import to GitLab not working as expected

[Ashwini]

Hi 

We are facing issue in the imported project. As explained below to reproduce the issue:

GitLab instance 1 :

1) Create a repo, fork the repo

2) Create MR keeping fork repo as Source and Main repo as destination.

3) Merge the changes from fork to Main repo.

Next step: Import the Project from one GitLab instance to another:

GitLab Instance 2 :

1) Import the Main repository which has MR in merged state.

Click on the MR the error will throw "500 error" Whoops something went wrong:(:(

Could you please suggest how to resolve the issue?? Or Is this bug in Community edition.

Thanks

Ashwini