We are in the process of imaging this summer and have successfully been using this procedure for several of our other sites but I have 2 locations/servers that seem to be having the same issue...one school is running Network 6.5 sp8; ZDM; the other running SUSE Linux 10with same ZDM vs. We are flagging the ws object to "Put an image on this workstation on next boot". None of the workstations are recognizing this flag.

Checked ws registration...that looks good.
Able to PXE image by using CTL+ALT.

I have looked through other posts and still have not found the possible solution.