Hi Caleb,
When you save a printer in a report, the printer name and port are saved in the report. For the report to use that same printer from another machine, that new machine must have the printer setup exactly as the original.
If the report cannot find that printer on the machine, it will use the default printer.
For this to work, your label printer must be on the network and added to each machine. If the label printer is installed locally on one machine the other machines will be looking for LabelPrinter1 on USB port 1 or something like that. Because this printer is not install and using the same port, it will use the default printer.
Hope this helps,
Brian