Can I open/restore and back up a new account without impacting my personal account?

LTA'75

I am doing some reconciling for a friend..Going back years!!!. His computer crashed, but I backed up on a usb. I want to use my Quicken by opening a NEW FILE and restoring his backup ion to that NEW FILE without impacting my information(personal File. In addition, I want to give him a USB back with all of his file information WITHOUT him having mine. How does this work?

I did back my personal file today on dropbox, and usb just in case we have a hiccup, Please help. I am so stuck!!

NotACPA

All Quicken files (ending in .QDF) are completely independent of each other.

If you're restoring HIS QDF backup into a "New File', it won't impact your Q data file.

NotACPA

All Quicken files (ending in .QDF) are completely independent of each other.

If you're restoring HIS QDF backup into a "New File', it won't impact your Q data file.