I should have added this:
If you have the Pro-163, the cable, and the software (Win97, PSREdit300 or ARC300), then what you can do is:
Use the cable and software "read" your current configuration in the Pro-2055 into the software.
Use the software to edit the control channel frequencies as needed to the new settings.
Then, using the rebanding instructions found on this page
in the Wiki, use the software to modify the system to enter and use the custom tables required for a rebanded system. (It's slightly different for each software program, but any of the three can do it without requiring that you become a premium subscriber, and re-import from scratch.) Long term, if & when Brazoria switches to the TxWARN P25 system, you probably would want a premium subscription, to import the system into a digital scanner.
Once you have the programming, imported from your Pro-2055, updated correctly in the software, then disconnect the cable from the 2055, and connect it to the Pro-163 & upload to that scanner. You should be ready to go.