Adding a new VPC is destroying resources in a previously created VPC

We already have a few VPCs in the prod running, and I am trying to add one new for the testing. With the new when I run the “terraform plan” command, it shows that it will destroy some resources in previously created VPCs. My folder tree structures are like this:


Each has its own set of tf files, like vars, aws, output, and vpc.

Is there any way a new VPC can be created without altering any resources in previously created VPCs? Thanks for your help!!