I have spent at least the past two weeks (part-time) trying to work out the right settings to get AI to update my simple app from a disk location and a web location. That means I have gone through the v1, v2, and updater project sequence hundreds of times.
It's a big headache! I was constantly switching among projects, comparing Update.txt file/url locations, MSI update installer locations, product versions, and so on.
My feature request is for you to merge/add the Updater section as a new section after Product Information in the main products. The updater section is only one section and would enable users to work inside of one project and specify path values in only one place.
Ideally, in my view, I would put the version in one place in the product tab, to be used throughout the project, including the version (in two places) used in the current updater project.
I would put all the paths/URLs on one page too, to make them easy to check for consistency.
UPDATER:
Path/URL to read the Update.txt file - it says where to get the MSI to download/copy for installation
Path to the updater MSI to get file size/checksums: (this should be greyed out and defined by the output path in the build section)
I could take more time to propose more details for the UI, but my time might be wasted at this point. I'm sure you have thousands of feature requests that you have on a list somewhere.