[Dx4win] changing QSO IOTA award status by downloaded CSV file ?

[DL1AMQ at web.de]

I ask for Your experiences in changing QSO IOTA award status in DX4Win log.

By using ClubLog's „paperless“ procedure I got accepted nearly 400 different IOTA groups, including IOTA contest QSOs, I never had a QSL for. Changing IOTA award status in log for each accepted QSO from „---“ into „C“ is consuming much time. Is there a more comfortable way ?

I would like to use the CSV file, downloaded from RSGBIOTA.org, doing that for me.
Any hints how to proceed ?

Thank You in advance and 73 de Thomas, DL1AMQ