Can't add existing collection to API as Contract Test

I am unable to add an existing collection to an existing API in the designer. The collection is added in previous versions in the API designer.

What am I doing wrong or is something not working as expected?

API Designer with latest api version of 1.4.2.

API Designer with trying to add collection that exists in the workspace.

Collection that exists in the workspace.

Previous version of the API with collection in the contract testing section of the API.

When trying to tag the existing collection with the version 1.4.2, the version does not exist in the list to choose from. Why is that?


Help on this would be tremendous as I’m perplexed.

Bug Report in Github project: