Merge pull request #27545 from hashicorp/alisdair/remote-backend-version-check-state-migration

cli: Fix state migration remote version check

command/meta_backend_migrate.go

@@ -70,6 +70,19 @@ func (m *Meta) backendMigrateState(opts *backendMigrateOpts) error {
 	opts.twoEnv = backend.DefaultStateName
 	opts.force = m.forceInitCopy
 
+	// Disregard remote Terraform version for the state source backend. If it's a
+	// Terraform Cloud remote backend, we don't care about the remote version,
+	// as we are migrating away and will not break a remote workspace.
+	m.ignoreRemoteBackendVersionConflict(opts.One)
+
+	// Check the remote Terraform version for the state destination backend. If
+	// it's a Terraform Cloud remote backend, we want to ensure that we don't
+	// break the workspace by uploading an incompatible state file.
+	diags := m.remoteBackendVersionCheck(opts.Two, opts.twoEnv)
+	if diags.HasErrors() {
+		return diags.Err()
+	}
+
 	// Determine migration behavior based on whether the source/destination
 	// supports multi-state.
 	switch {