Amazon warehouse eating my inventory ?

Hey Everyone!

Noticed that the number of orders I received doesn’t match with inventory.

Example : I sent 10 items of a listing to the warehouse. Couple of days later the inventory is updated to 10. All good there!

There were few orders. Once they are fulfilled the quantity doesn’t match.

Overall quantity from the orders is 5. So 5 should remain at the warehouse but it’s say only 4 remaining.

This happened to 2 of my other listings too.

Anyone here experienced this ?