ISSUE with UAD Plugs and Mix recall

I discovered an issue that mix recall does not properly recall UAD plugins nor their settings between different saved versions.  If I store a mix and come back to it in MR, some UAD plugs are not properly saved or they are not saved with the settings.   This has caused me big issue so for now, I just went back to saving different versions of the file.   Anyone else experience this or know of a solution/workaround?