It should be possible to mark transactions TO NOT LET THEM be automatically merged by Koinly.
For example as secondary tag which has no effect on the already existing primary tags like cost, income etc.
This tag/mark needs to be available on the custom import csv and on manual made transactions within Koinly
As example: This would have avoided the automatically merge mess up, of my manually imported borrow and repay transactions. Those where randomly merged with existing transaction, but should have never been merged with any