Migration document showing as corrupt when opening it, also cannot unzip it to get the MDS File

Summary:

I have completed the following steps however when i get to point 8 I cannot extract the MDS file.

Also the JAR file when opened comes up with a corruption error

1. Go to Navigator → Configuration → Migration
2. Click on Create Migration Set in the Outgoing tile
3. Click on Move All Changes and provide a name for the Configuration Set
4. ADF customizations are exported by default as part of module “Application artifacts” hence, all other options can be unchecked
   1. Some other modules are exported by default such as “Analytics”, “CRM common components”. Those can be ignored.
5. Click Save and Close to submit request to export