ZBX_MAX_RECV_DATA_SIZE changed between 2.0.9 and 2.2.1

[LenR]

zabbix-2.0.9/include/common.h:#define ZBX_MAX_RECV_DATA_SIZE (128 * ZBX_MEBIBYTE)

zabbix-2.2.1/include/common.h:#define ZBX_MAX_RECV_DATA_SIZE (64 * ZBX_MEBIBYTE)

Our proxy config was over 64M on 2 proxies, so 2.2.1 upgrade broke them.

Why was this changed?? How to fix?

Thanks