Multiple PERSONAL.xlsb files - which to keep - how to delete

Originally Posted by CHRISOK

I'm wondering if it is OK/SAFE to delete all the xlsb line items in both folders (that are not the main/original PERSONAL.xlsb)?

I see no reason why not. If this was my computer that what I would do. As you say, you have one main personal.xlsb and nothing else. If you have concern, you can also removed the extra files to some safe backup spot and after all is working fine, delete the unnecessary.