...
If you use Terraform or a similar tool to manage your VPCs, please inform the Cloud Team during the Customer Input #1 stage. You would have several options to update your infrastructure-as-code configuration to support this migration. You could import the new Route Tables and TGW Attachments, or you could create your own Route Tables and TGW Attachments.
I don't really use the Direct Connect in my AWS account. Can I remove that feature?
Yes, you can. Just contact cloud-support@cornell.edu. Depending on the timing of things, we may need to migrate your Direct Connect connectivity to the v2 architecture before removing Direct Connect from your account entirely.
References
...