Not confirmed [Indev 0.55.2] Knock Off (and bad internet?) makes your items disappear

[Exemplary]

Earlier today I defeated Red, whose Pikachu knows Knock Off. During the fight, it knocked off my Ampharos's Magnet. After beating Red, my internet went down and I had to sign back in to gamejolt. After the credits, I saved. Before I closed my game i remembered to re-equip my Magnet. I found that my Magnet was no longer held by Ampharos and it was not in my inventory.

 

[Runaryu]

Confirming this as of [Indev 0.57.1]. Tested against Farfetch'd on R48. The item was no longer held by my battling pokémon and was not available in the Bag either.

 

[VVolfrann]

Confirmed in [Indev 0.58], I've lost a soothe bell on two occasions in a local hosted game due to knock off