OIC Rest API - post connection

I am using the post operation to update connection properties.

Step 1 - using this resource. /ic/api/integration/v1/connections/{id}, first update the properties

Step 2- incase of ATP connection adapter, using /ic/api/integration/v1/connections/{id}/attachments/{connPropName} to upload the WALLET zip file.

Now both rest calls are doing test connection part of the call. If we need to migrate a connection change from lower instance to higher, both operation needs to be completed to make a test connection successful. But as part of post call from step 1 , the API automatically doing a test connection and fails, since the wallet zip file is not uploaded.