UnChamfer Pro is a script designed to allow for quick, easy, and accurate removal or scaling of mesh chamfers. All the user has to do is select the edges of the chamfer they want removed and run the script. It supports both automated and manual approaches to determining where selected edges should be collapsed to.
Supports Editable Poly & Edit Poly modifiers.
Works with 3DS Max 2013 – 2022.
The tool costs $8 and it’s available from Gumroad