Thank you for your answer.
As the worship director in a small church, I use my MacBook Pro to mix live via an RM32 for my church but also connect it to my AudioBox44 at home. I do like the VSL software. Until I encounter problems at the church which would necessitate using the latest UC Surface, I'd just rather get my VSL back and use the previous version of UC.
And where would I get the old versions of both?