[bluecat]

We are using flat rate shipping, and are using version 3.4.9 (for now anyway). We want to do the following (any advice is greatly appreciated):

1. Because the post office is cheaper and more convenient (because of our location) to send "some orders" (smaller packages anyway), we don't want the user be able to "pick" their carrier, but rather, we'll pick it ourselves based on the best rate.

2. We then want the customer to be able to track the package as normal, but using the carrier we chose.

We use FedEx on about 80% of our orders, so it's the default on our site, but of course when we enter a post office tracking number (so the customer can track it), it doesn't work. Is there a way to do this?

Thank you.