it will auto reboot into any newer recovery [[ ie: cwm 6.0.x.x, or new TWRP 2.x.x, or Devil Recovery ]] ,,, never go back to the [cwm4_fixed_for_cm7] recovery,, ,, unless you have ODIN'ed back to stock,,, ,,, this is normal,,, and now you will need to select install zip from sd [again]::
and choose to install/flash your 4.2.x ROM of choice AGAIN,
if it auto reboots you back into this same recovery again [meaning: any newer recovery],,, still that is fine/normal ,,,,,,, simply install/flash your 4.2.x ROM of choice AGAIN,,,, It may also give you an "Error Code",,, still that is fine/normal ,,,,,,, simply install/flash your 4.2.x ROM of choice AGAIN,,,
...[[[ the recovery style and version is determined by the ROM you are installing, some have standard CWM Recovery, some have Hellybean Touch Recovery,,, some have TWRP Recovery, and some have a blue Touch Recovery version ]]]...when finished installing your ROM,,
if may auto reboot and load the ROM,, if not manually choose to Reboot Rom,,, and ,,, Wait ,,, patiently,,, ,,, maybe as much as 8-10 minutes for it to boot all the way up.
you may ultimately have to flash 1 more time,, some ROMs seem do be more finicky than others.
After that you really should be almost good to go.