Close Money.
Copy the *.mny file to your Documents folder on the new computer. How large is that file?
Right-click that file, and choose Open. Then set up the backup settings:
In Money Plus: Tools->Settings->BackupSettings
I suggest checking
x Automatically backup my Money file every time I close Money
Save in [a place on your hard drive ]. It is best to Browse to
a location rather than typing the path.
x Ask me before backing up each time*
x Compress Backup Files
Keep only the _20_most recent backup files [adjust to taste]
x Perform scheduled backups every _28_ days
Save in [a USB flash drive location]
x Ask me before backing up each time*
x Compress Backup Files
Keep only the _5_most recent backup files [adjust to taste]
If that does not work, try the same thing with the latest *.mbf file.
Be careful to not be displacing good backup files with bad ones.