Sorry for the long delay for an answer - guess it is because you are right about the problem. Actually, the field C27 contains the credit limit if the client is below their limit or $0.00 if they are above their credit limit.

I have confirmed that this is fixed in Adagio Receivables V8.0A currently in beta.

Just make sure your client is on an Upgrades Plan if this figure is important to them.

Have a great holiday!