My scheduled tasks have disappeared, i.e. are no longer shown in the Scheduled Backups window. I'm using Reflect version 7. The log shows that no backups were performed after May 12, so something must have happened then to the schedule. Support told me "If you were using the Macrium task scheduler then the scheduled should be saved by default in C:\Users\YourAccount\Documents\Reflect\Schedules, you can open Reflect and navigate to the Scheduled Backups tab, click import and then browse to that directory, ... If you were using the Windows task scheduler then, unfortunately, there isn't a way to import that schedule and they have to be created manually."
I have only created schedules within Macrium, though the documentation says that Reflect uses the Windows scheduling system. I don't have a C:\Users\YourAccount\Documents\Reflect\Schedules folder, but found C:\ProgramData\Macrium\Reflect\Scheduler with schedules.xml, which in fact shows all the missing tasks. When I created a new task (after the others all "disappeared"), that task was appended to the schedules.xml file. However, when I close and reopen Reflect, only that newest task is shown. I tried using the import function to import the file (before I added the new task), but nothing happened. So perhaps schedules.xml is not where Reflect is storing and retrieving the tasks? The XML file appears to be intact, with no changes from a backup from two months ago.
I'll probably just go ahead and recreate all the tasks, but would like to know how this happened and to fix it in the future, since the backups simply stopped running with no warning. (That's one reason I use three backup systems for most of my data.)