Update: All the programming functions are now working when I use the Snap programmer from MPLAB x IPE v5.30. I found that the Snap device must be run from the Advanced Mode in order to view the program memory and eeprom memory fields on the output screen.

Where can I find the CLI text in order to insert it within MicroCodeStudio? Is this idea really feasible at all? To me it seems unlikely given that the MCS software is so old.