When clicking on shipment options for a shipment, clicking on the COD tab turns the shipment into a COD shipment and causes weird problems with my third-party shipment. There's no way to "undo" this and the shipment has to be re-created and make sure we don't click on that tab. This appears to be a bug
Official response
We believe this is related to an issue with the FedEx REST carrier which was resolved as of ShipCenter 1.3.0.3.
We also added a few more helpful features for easily resetting all shipment or package options as of ShipCenter 1.3.0.5! Here are the relevant release notes:
ADDED: Carrier: FedEx REST: Shipment Editor: Added the ability to reset current or all shipment options to default values.
ADDED: Carrier: FedEx REST: Shipment Editor: Added the ability to reset package options to default values.
Check out the ShipCenter release notes for all the updates in our latest release!
Thank you for reporting this to us! I agree that this sounds like a bug, and I have created an internal case for further review.