[GNC] CSV matching for credit cards?

[Elmar]

Good evening - I have managed to figure out how to do the csv matches 
for normal asset accounts, since the labels actually line up with what I 
expect them to mean.  But I am having problems with credit cards.  My 
csv looks like this:

Tran Date    Post Date    Description    Ref Number    Amount
3/20/2021    3/21/2021    [redacted]         19918    74.99
[lots more lines like the above]
3/3/2021    3/3/2021    PAYMENT - THANK YOU        -792.66

How does this line up with deposit?  Withdrawal? And in the gnucash file 
the columns for liability accounts are increase and decrease, which does 
match either the csv, or the importer.

Further, I can't get some matches that are obviously matches to match - 
date, amount all both identical, but it says "no match". Why?

- Elmar