I have configured my map, project and all operational layers to use the same thumbnail (company logo). When I create the .mmpk to side-load onto the mobile device, the thumbnail shown is a generic screenshot of the default extent. Looking under the hood of the mmpk, I can see that it is referencing "thumbnail\thumbnail.jpg". Is there any easy way to set this in the application space (Pro or Explorer)? Or, will I have to manually go into the file and change the thumbnail directly in the xml? The end goal is for a disconnected transfer, but I could in theory upload the mmpk to a Portal, change the thumbnail in the Portal item details page and then download the mmpk again if that sets it correctly?
