If you want to automatically update the writables, yes. But do keep in mind that it will upgrade all writables. It will do this during attachment of the writable. So if a writable is never attached after you upload the zip file into the manager that writable will not be updated.
In this case it was only to change 1 writable manually. I would still suggest attaching it to a machine without the Appvol agent and manually edit it there,