Transfer files between user accounts

I have had to create use account on my mack for domain access at my business.
when I try to move files or folders from the old account the the new account i am required to reset the permissions at the file level.
I have both use accounts set with admin privileges
I have tried use the shared folder, doesn't work
I have set permission on the old user account to read-write but that does not update the files...
Any ideas??

Thanks