Changing the ‘Manufacturer’ on an ASIN

I’m trying to join 2 ASINs together in a variation family. The problem is that each ASIN has a different ‘Manufacturer’ listed in the listing. I own both of these ASINs/the brand. In the past, Amazon has told me the only way to fix this is to delete your listing, wait 24 hours, and then re-create it with the new ‘Manufacturer’. I don’t want to disrupt my sales, so is there any way to do this without delete the listing? Thanks in advance!