None of my loans from Finca Peru are registering on the "loans" tab as such. But only "unknown partner"
The only way that I can see that that will happen is if the partner details are not correctly downloaded (which the macros do when they first start running, providing they haven't already downloaded those details anytime in the previous 12 hours) but the individual loan details are downloaded correctly.
Thus it's possible that, if a network connectivity error occurs while the partner details are being accessed but then fixes itself by the time it is trying to access the loan details, the situation you are describing could occur. (Although hopefully it will be very rare.)
I have made a change in v2.05 to download the partner details
every time that the macros are run, and also to use the partner details from the loan export file if the partner details can't be accessed directly from Kiva. Hopefully that will make the problems even rarer.