zenbatchdump and zenbatchload device totals do not match

I'm moving my data from a 4.2.3 install to a new 4.2.5 install. After using zenbatchdump and zenbatchload, my new server has 205 devices while my old one has 589.

I've been going through the dump file and it looks like it includes all of my Cisco switches,most of my HP and Netgear switches and NONE of my Brocade and Dell switches.

Any suggestions