Is it possible in sheetmetal flexible modeling to change the default options when editing a bend to have Anchor Apex active and use "Constant wall Height" as default for Bending editing option.
99.9998% of the time you want to change bend radii of a customer's solidworks/etc... file you don't want the flange to move or become larger. So the current default values creates extra work by having to select options to get the size and position back to normal.
The part dimensions should stay as in the original file by default.