I have one object with 1 bevel modifier and second with 2 bevel modifier, when I join both (ctrl j) the 2 bevel changes bevel to the first one...
is there any way for each individual object keep their bevel modifier after joined?
Once several objects are joined they will discard their modifiers and inherit those on the last selected object so it's not possible to join objects with modifiers on them and keep them unique, but you can limit the the modifier to a certain vertex group :