OFX import blithely imports already imported transactions

[auspex]

Version

1.12.9

What browsers are you seeing the problem on?

This problem isn't browser related

What happened?

I import a an OFX (v2) file. Then I import it again. Every transaction has a <FITID> which is specifically intended to permit the software reading the file from re-importing previous transactions. LSMB ignores the FITID and imports it again.

What should have happened?

I expect LSMB to ignore FITIDs that it has already imported.