Terraform import succeeded but show destroy and recreate

Terraform Terraform Cloud & Enterprise
1

Hi,
I am trying to import my existing compute engine vm to terraform.
After successfully importing, when doing plan it’s say - resource will be destroyed and recreated again .

~ metadata_startup_script = <<-EOT # forces replacement
        #!/bin/bash
      -
      +
     # do something
      -
      +
        # do something
      -
      +
        # do something

It is showing diff for empty line. I basically don’t wont to destroy and recreate the instance.