Odd behavior here.

On one page, I have 4 grids.  Call them grdMaster, grd1, grd2, and grd3.  Each of the last 3 grids has their own WARP control (wrp1, wrp2, wrp3).  When a row is changed on grdMaster I execute:

wrp1.refresh();
wrp2.refresh();
wrp3.refresh();

Each refresh posts back and the appropriate fill routine is called. The client updates nicely and everything looks as it should.  After changing data in the grids, I click a save button which does a full postback.  When I go to read the grids, whichever finished refreshing last has rows.  The other two are empty.  That is, grd1.rows.count = 0.  Same happens for grd2, but grd3 will have all of the rows.  The browser still shows each grid having their data.  I just can't see it from the ASP side. 

Any ideas?