Deleting Duplicate GMBs & Innocent Asset Collateral Damage (!)

[FatSniper]

Hi, I have to merge a couple GMBs on a clients portfolio that I need to nuke, but unfortunately, they have a grip of YouTube videos associated with the Google account on those GMBs that I'm required to keep.

Question: How do I merge those GMBs without having to remove the YouTube videos entirely?

Thanks!