Confused user of “old” Clear

I’ve had and used Clear on 2 iPhones for years - personal and work phone. Now I need to get all my lists onto personal phones. When I use the clearx://export-data to pull data off work phone, then airdrop it to personal phone, I’m asked if I’m ready to delete the data already on the personal. I want to merge, not overwrite. And I’ve no idea what “New Clear” is. I think I’m on version 2.511 from the App Store. Help!! (Employer may be about to reclaim the work phone I’ve had for 10+ years.).

Thanks for a fast reply.

Jeannie