Migration domino to Exchange Archive

Dear Team

I hope you are doing good. I am migrating from domino platform to Exchange platform

I am using Enterprise vault version 12.0.3 for archiving domino and Exchange platform

All user data migrated from Domino to Exchange using quest
Now each user has 2 archives one domino and other one is Exchangr Archive
I ran evdominoexchange utility to repair the shortcuts as well

Now I have started moving data from domino archive to acchange archive using transvault

During trans vault migration I found that there are some users who doesnt have ad account or mailbox in Exchange

These users are way to old users who left the company and there domino mailbox was disabled

Now I need to know an option so that I can create Exchange archive for such accounts without creating Ad or mailbox

I just want to dump data from their domino archive

Any feasible option is available please let me know