Aws_vpc upgrade from .11 to.12

Hi,

our terraform scripts were written in .10, I was able to upgrade to 0.11.15 without issue, when I try to upgrade to 0.12.31, I have to upgrade aws_vpc sub module from “1.23.0” to “3.6.0”.

after upgrading module “plan” showing up with routing table “destroy” list, I have verified remote ‘tfstate’ file, I can see the routing table id exists in state file

can you please advise how to fix this