This did a good job importing-exporting 280 transactions

This is crucial functionality for me, thank you for this.
As an additional "feature", it would be awesome if this supported regex
One of our retailers is "Rimi", and depending on store location I get different Payees:

[Payee]
; Rimi
RIMI HM MOLS\KRASTA IELA 46\RIGA\LV-1003      LVA = Rimi
RIMI CHM VALDEMARA (RI\KR. VALDEMARA IELA 112\RIGA\LV-1013      LVA = Rimi
RIMI LHM ALFA (RIGA)\BRIVIBAS GATVE 372\RIGA\LV-1006      LVA = Rimi
RIMI CHM Saga (Stopini\Bikeru iela 4\DREILINI\LV-2130      LVA = Rimi
...and many more

if I could use regex like this, it would match all of these

[Payee]
; Rimi
^RIMI.* = Rimi

Hey @raiviskrumins,
that makes sense to me. The solution would probably be simple, however it is not possible atm, because the configuration file with its ini format is quite restricted. Regex expressions as the key will not be parsed correctly. @nocalla another reason why to switch to yaml for all configuration.

Regex expressions as the key will not be parsed correctly. @nocalla another reason why to switch to yaml for all configuration.

Regex is already supported in the configuration file for file names.