I have AMS and 4 filements loaded and all are mapped. I added a filament to my EXT source and initially was able to print a TPU washer as a test. Some time later, I tried to print using the external TPU filament and when I send the slice to the printer, it says the external filament is not mapped. When I go to synchronze the filaments it shows the Ext filament as “unmapped” I can click on it there and select Ext but it will not save it. I try to synchronize and it reverts to unmapped. On the Device tab, it shows the blue TPU filament is installed. How can I get the ext filament mapped?