I found the Solution elsewhere here (https://ttlc.intuit.com/community/taxes/discussion/data-import-from-a-current-version-of-quicken-con...)
Turns out the instructions for creating that File are buried so deep that even 20+ year Quicken users can't easily find them.
SUGGESTION: Since other TT / Quicken veterans also have this problem, TT needs to rewrite the TT IMPORT Error Message with clearer instructions (as "grundel" level 2 did at the above link).
Thanks.
