Importing Large Files on Pages - Two Step process should be one step

When importing a large file during a Process on Pages, I'm required to first attach the file, and then wait for the attached file to finish uploading to Anaplan, and then I have to come back to the action to run it. However, in the original UX, this is all one process. Having this as a two-step process is preventing us from moving some of our Data Hub dashboards to the new UX because it doesn't work when the file is large. It would be best to move this back to a one step process in consideration that admins may load larger files manually