As far as missing inventory goes, this one's a curious case. I started up shadowkeep recently, and visited the drifter (after having not participated in any of the Season of the Drifter) and did the quest for gambit prime up to the point where you make a mote. I "received" the synthesizer, but the synthesizer isn't in my inventory, in my pursuits, or anywhere else I can think of. Could anyone help me with this?