Ok, here is what I would do – no guarantees that it is right!
1) Since they are both showing up on the daily plan right now – go to EACH of them on the daily plan, and click the little arrow next to where you check off the work that was done. Click on any you have marked as done or worked on, until there is nothing marked in at all. (Note done what was done to put in later.) Do that for all the assignments that were done or worked on. Now you would have both items in with nothing done on them.
2) Go to the Scheduler tab, and find the resources (presumably it is up there twice…) – and click on Delete until they don’t show up at all. This deletes it from the schedule.
3) If this was a resource you added yourself click on Added Resources. Do you have 2 copies in there? Delete one of them from here. (If it wasn’t a resource you added, find it in the BookFinder to schedule it)
4) Schedule the remaining copy of the resource, and assign subject, days, etc….
5) Go back into the Daily Plan…. hopefully you only see it listed once! Click on the little arrow to to open up the days that it has been worked on, and enter in the assignments already done.
Hope this helps!