The upgrade 0.13 guideline says the following:
For this upgrade in particular, completing the upgrade will require running
terraform apply with Terraform 0.13 after upgrading in order to apply some upgrades to the Terraform state, and we recommend doing that with no other changes pending.
Does this mean that the upgrade path recommended is the following one?
1- You should apply terraform 0.13 with the same configuration files (adapting the providers and sources) you had with terraform 0.12 (without making any changes to your resources), so that the tfstate is updated
2- Make your resource configuration changes in the code
3- Apply again with terraform 0.13 + with the resource changes.