So tonight I had an export block set from 20:00 to 22:30 and WW fired of the command.
Later I noticed that the export was going better than planned and would finish around 22:00 so I changed the agile schedule to remove the 21:30-22:00 export slot and do a charge instead leaving the 22:00-22:30 export in place.
Because the export block was already active, I wasn't expecting this to actually work but at 21:30, the export stopped and charging started 😮
Not sure if any mods have been done but Yay.