Currently to refresh a Game Piece Inventory Window a user has to explicitly click "Refresh".
It could be useful to be able to refresh it programmatically, with a global hotkey. (Similar to the global hotkeys to shuffle decks or send a deck to another deck.)
P.S. Just noticed that if you use "Save" on a GPIW the report in chat is simply "Wrote" in light blue (at least on my screen/default preferences), and nothing else. Tried this with 3.4.11. No info of what was written, just "wrote".