Something wierd has happened in our Project : INFO5001 USYD

Last week I created a number of Teams (7x), Iterations (Semester 2 / Week 7 and Week 13), two work items of type Assignment (2712 and 2713) (I left these as Filed Against : unassigned).

I then created Deliverables for each of the teams and linked them to the Assignment 1 (and planned for Week 7 as well as Filed against each team).  So far so good !

Then I created an Iteration Plan for each Team.  Also added a few Work Items of type Task for good measure in each plan (Lab 1, Lab 2, Lab 3).   So far, so good.

I then write a tuturial to help students sign on and cope with creating new work items, etc - lots of screen shots.,

Then, later in the afternoon - one of the members of the team (Professor) created an additional two teams (and their categories) - and created new Deliverables.

However, when they tried to link to Assignment 1 (2712) - they could not find this.  (**)

I have now looked at this Project and am astounded !  I have run a range of queries trying to find these two work items : 2712 and 2713 (both of type Assignment).  NO WHERE TO BE SEEN !  Just dissappeared.

I reviewed the Plans that I created last week - they are still there - but no Assignment in the Roadmap view !  (Deliverable and Tasks are there)

What could cause two Work Items to dissappear ?  I have a class / lab tonight at University - be good to know what to do . . .

Any ideas / suggestions ?

(**) as I was not with the Professor when they created the two new Teams and Deliverables, I do not know what they did...  However, I would have at least expected to find these two (2712 and 2713) work items when running a number of queries

ps - I will most likely create another two work items and link them to the Deliverables . . .