ms tabstrip and multipage control issues

Hello Everyone,

i have a tab strip (with 5 tabs) and corresponding pages. these pages each use a grid control within them.

i have discovered an issue, that when i click on the checkbox of one of the pages to engage a filter, that multipage page re-loads perfectly. however, when i switch back to another page all of the date values vanish! (note that these date values are stored as strings) this is so bloody weird because JUST the date values vanish, anything looking like an int or string stay there (note EVERYTHING is stored as strings, not my decision so please dont berate me :( ).

when this checkbox is clicked NO databinding events are being hit on the problem page, which makes even less sense, because if something is vanishing it means something has changed. but i have put breakpoints in every single part of the page (and embedded control) that even remotely relates to databinding and no go...

its just as though the dates magically disappear.

can someone give me any ideas on why this might be happening? im sorry if i havent given enough information, but its all i can think of.

cheers
adam