Using QuickBooks Pro for Mac 4.0 on your new Mac isn't possible due to significant system and software incompatibilities, Pbmurphy.
QuickBooks Pro 4.0 was designed for older Mac operating systems and hardware that are no longer supported by modern macOS.
If you still have access to your old Mac, you can continue using QuickBooks Pro 4.0 there for your business transactions.
You can revisit this thread if you have any follow-up questions.
