How do I change the date of a completed item?
Sometimes I don't check off that I've completed items until the next day or so but I'd like my completed history to reflect the date I actually did complete the item. So is there a way I can change the date of completion on an item I've already checked off as completed?
unfortunately, that's not possible. Every task gets the current date/time as it's being checked off and this timestamp cannot be changed. Of course, you can un-complete a task and complete it again to assign the current date to it, but you can't change the timestamp to a past date.
Still, we may consider adding such feature in the future and you're welcome to add a request to our Votebox: http://todoist.com/Vote/