I apologize for not responding sooner, I was out sick on Friday, and have been working to catch up from that.
I did some testing with our keys and capsules in one of our 1430 printers, printing pure sheets of color to run down the cart quickly, and see the ink level of a cart was very low, maybe around 10% when the ink out light illuminated and computer told me the cart couldn't be recognized. I removed and reinserted the key/capsule (normally, you would refill the capsule, or install a fresh/full one), and it was immediately recognized by the printer, the ink out lift turned off, and ink level reset to full. I then removed and reinserted other keys/capsules that were reading 1/4-1/2 ink remaining, and the ink levels were not reset.
If the ink level was very low/almost empty when you removed the key/capsule, then this may have caused the chip to reset. To get back to correct ink level readings, I recommend using a chip resetter to manually reset the chips when new/full capsules are installed.
I hope this helps. Please let me low if you have further questions, or there's anything else I can help you with.
Best regards~ Dana