I had the geyser version of this happen to some mat that I had targeted when it fell into the geyser, I was lucky enough to see it disappear off the radar going almost straight up where it vanished out of range. Some time later I was heading back to the ship and saw a mat lying on the ground nowhere near where I had see one heading for the stars.
Point being your missing mat is probably not going to stay in the few hundred metres range of your sensors.
Yeah, it might yeet out of your range, or it might not. /shrug
In my experience the 'not' is the far more likely outcome, but of course YMMV and external factors like geysers giving it an extra kick can indeed send stuff on a one way trip into Narnia.