Question about cancelling orders

Hello.

I believe I already spoke to customer support in the past but to be honest i’m not confident in what they had to say after my experiences of cancelling orders. I feel like sometimes the item changes its quantity back and other times not, so i’m not sure - if anyone can clarify this would be really appreciated.

So my question is basically when you cancel a buyer’s order, will the item automatically update the QTY to 1 from 0 for example? or do I have to manually change the quantity back to 1? (i’m fairly confident when I asked CS about 1 year ago they said it would revert automatically, but then I noticed that this did not seem to happen, had stock stuck in storage without being sold and lost trust in it - but perhaps something else was the cause, not sure).

Perhaps it differs depending on how the item is cancelled?

Sometimes I get buyers request a cancellation through a message and sometimes I have to cancel it my end for whatever reason from time to time. Same for all sellers on Amazon I would imagine.

This situation causes some issues for me I think (in regards to stock being stuck in storage without even being listed).

I am always scared to change the quantity back manually, in case it causes an oversell.

I notice when I check “cancelled orders”, that quite often buyers might “change their mind” and cancel it somehow their end without me even realising! sometimes I scroll through cancelled orders after a few months of not checking it and don’t even recognise some of the cancellations (because the buyer cancelled it themselves), so I have to do a stock check and see what i’ve still got. It’s a nightmare to be honest with you, if I left it years without taking action I could have tons of stock that is sitting there and not even being sold!

Does anyone have the answers?