[Q] can I safely uncheck EBR1, EBR2 in flash tool not to change partition layout? topic

I have Lenovo P780. There are Chinese and RestOfWorld ROMs for this phone, and they are little bit different.

My question is: can I install ROW ROM, repartition it (there are simple patches that work with some ROMs) and later uncheck MBR, EBR1, EBR2 (which of them?) when installing my target Chinese ROM to leave partitions as I set them before?