iWork/Pages reinstall in my Apple ID
Many years ago, my husband purchased iWork 09 for me using his Apple ID. Eventually the application upgraded to the current free version (Pages/KeyNote/etc), but I still have to give his Apple ID info in order to update patches/fixes etc. I'd like to do away with having to give his info in the future because the program is now free, but it won't update if I use my ID. All other apps on my iMac are associated/purchased with my ID.
Is it possible to uninstall the current version of Pages, plus the old version which I assume is triggering the need for his ID, and then reinstall it using my ID? If I drag the application to Trash, won't there still be record of the old purchase in some OS file?
Thanks in advance for your help!
iMac, macOS Sierra (10.12.4)