Enabling Things iPhone legacy sync messes up recurring tasks and areas - can this be avoided? I'm trying to enable Bonjour Legacy Sync in Things iPhone (so that I can sync with an old and unused version of Things Mac on Snow Leopard).

Having followed the instructions linked above, when I restart Things in Things 1 mode it shows lots of instances of a recurring task in Today which weren't there before, and doesn't show a large number of changes I've recently made to Areas.

I've now turned off Things 1 mode and restored the Things 2 database. Is there a way to enable legacy sync without disordering my tasks and losing some recent changes?

Running Things 2.2.3 on iOS 6.1.1 (deliberate non-upgrade to avoid battery problems on a beaten up 4S).
Prompt response via email from Julia at Cultured Code to my support request using the feedback form answers the question:


  When you revert to Things 1 mode, the data from Things 2 cannot be
  converted to the older database format. There should be a note warning
  about this when converting to Things 1 mode; if not, I apologize for
  the confusion this caused.
  
  Basically, if you want to have the to-dos from Things 2 in Things 1,
  you have to re-enter them manually. Since this downgrade path is one
  that only very few customers chose to take, we didn’t spend time on
  implementing a downgrade path for the data.