Feels strange to work with Blender and his vertex group feature and the checker deselect feature.
it looks like Blender checker deselect have limits sso in some cases with face selection and vertex group asigning or saving
Asign and select feels strange too.
some time it works sometime the saved face selection in a vertex group is lost or complet different
when the vertex group is selected. ..
weeird
but I never could saved a Cheker desect pattern specially when it is symmetrical or near by.
look at nthe video I try it again and agin..
But it could be a normal behavíor .
I dont know Blender 2.74 (64bit) or 2.74.5 beta and (I found its 32 bit) both have the hassle ready for me..
best rgard