[GNC] How to import MT940 and/or online banking missing in 5.5

[An Ku]

Dear all

Unfortunately, my bank's CSV export is useless as it does not state
recipients or any useful information of transactions apart from the amount
and date/time of execution. They do however provide the option to download
MT940 as well as camt.053 (apart form PDFs). I understand there used to be
an option to import MT940 transactions through an online banking module,
but I cannot find it anywhere in the UI (I'm using windows and am on v5.5).
I found references to an external online banking package but no how to make
it run on a windows machine.

I'd appreciate any help on:

   - Importing an MT940 file directly
   - Importing an camt.053 file directly
   - Converting either MT940 or camt.053 files to CSV

Thank you and kind regards,
André