Managed to lower IncrementOnly values but can´t set to 0

[cscaster]

As said in the title, I found a way to edit and lower the IncrementOnly value that can be found in some achievements (Open Steam, set to offline mode, reset all stats, set value to 1 and the achievement related to the value will lock itself). Thing is, I have been trying to set the value to 0, but I get the store aborted error every time. Just leaving this here because I´m aware that quite a few people were struggling to reset some achievements due to the IncrementOnly stat, and at least for me, this method has worked. However, I would like to know if anyone has any idea of how to set an IncrementOnly value to 0 or if this could be something that is added in an update.

Thanks.

EDIT: The games I´m having issues with are Terminator: Resistance and Deceit