Merge data across Apple ID
I have 2 Apple IDs and one of them is hooked up to an Apple Card so I realized I have to go back to my original Apple ID. My dilemma is that I really don’t want to loose messages and a lot of my information. Is there a way for me to merge my messages and photos etc. all into one iCloud or between devices so I can get rid of the other one? I have several phones and a laptop so if there’s ways I can do it across other Mac devices I’m willing to try anything at this point. Thanks for any assistance in advance!
iPhone 13 Pro Max, iOS 15