Hey, I saw a message you posted in the Custom Quote Sync app, and regarding the error you received about line item descriptions getting jumbled to the wrong lines... here's what I wrote in response:

@Jan Cuevo -- we experienced that issue a few years ago! It has nothing to do with the sync tool. I spoke to Salesforce support, it's a bug in their system. Salesforce starts to get confused after you use the same product on an opportunity multiple times. It was so frustrating and so easy for us to miss pricing differences etc. (We'd quote quantity discounts for instance, so that's why you'd see the same product on multiple lines).