2 - and for my poor English and horrendous spelling errors
i have a p500h (OldBB)
using "arnab321-Tasssadar-MultiROMMgr-v5.1" i dual boot
wen the story start i have CWM Recovery v126.96.36.199 CM10.2 on internal and CM7.2 on sd-ext
first i flashed mukulsoni`s flashable CWM Recovery v188.8.131.52
booted to CM10.2, works fine
booted to CM7.2, works too
No, this recovery for KitKat only, as you must be aware that KitKat ROM flash on "Set_Metadata_Recursive" and all previous JB and others were using SET_PERM_RECURSIVE.
The update can take backup and restoration of sdext, which was disabled in previous one. Enjoy....