<VALUE MAP_ID="1001" MAP="0" MAPNAME="BichonTown" SERVER="0" CHNSERVER="0" NEEDLEVEL="7" TIME="0" WEATHER="0" VEHICLE="1" PVP="0" MINE="0" CONTROL="" ENTERLV="0" ENTERQUEST="0" ENTERITEM="0" NORECONNECT="DQ_910" MINIMAP="1001" VER="200" APPLY_ROW="0" MAP_EXP_RATIO="0" MAP_DROP_RATIO="0" MAP_MONEY_RATIO="0" ORDERLIST="0" /><VALUE MAP_ID="1002" MAP="0_000" MAPNAME="TownHall" SERVER="1" CHNSERVER="1" NEEDLEVEL="0" TIME="1" WEATHER="0" VEHICLE="0" PVP="1" MINE="0" CONTROL="" ENTERLV="0" ENTERQUEST="0" ENTERITEM="0" NORECONNECT="5515" MINIMAP="0" VER="200" APPLY_ROW="0" MAP_EXP_RATIO="0" MAP_DROP_RATIO="0" MAP_MONEY_RATIO="0" ORDERLIST="0" /><VALUE MAP_ID="1003" MAP="0_001" MAPNAME="TownHall" SERVER="1" CHNSERVER="1" NEEDLEVEL="0" TIME="1" WEATHER="0" VEHICLE="0" PVP="1" MINE="0" CONTROL="" ENTERLV="0" ENTERQUEST="0" ENTERITEM="0" NORECONNECT="0" MINIMAP="0" VER="200" APPLY_ROW="0" MAP_EXP_RATIO="0" MAP_DROP_RATIO="0" MAP_MONEY_RATIO="0" ORDERLIST="0" /><VALUE MAP_ID="1004" MAP="0_002" MAPNAME="TownHall" SERVER="1" CHNSERVER="1" NEEDLEVEL="0" TIME="1" WEATHER="0" VEHICLE="0" PVP="1" MINE="0" CONTROL="" ENTERLV="0" ENTERQUEST="0" ENTERITEM="0" NORECONNECT="221" MINIMAP="0" VER="200" APPLY_ROW="0" MAP_EXP_RATIO="0" MAP_DROP_RATIO="0" MAP_MONEY_RATIO="0" ORDERLIST="0" /><VALUE MAP_ID="1005" MAP="1" MAPNAME="LostParadise" SERVER="1" CHNSERVER="1" NEEDLEVEL="7" TIME="0" WEATHER="0" VEHICLE="1" PVP="0" MINE="0" CONTROL="" ENTERLV="0" ENTERQUEST="0" ENTERITEM="0" NORECONNECT="11" MINIMAP="1002" VER="200" APPLY_ROW="0" MAP_EXP_RATIO="0" MAP_DROP_RATIO="0" MAP_MONEY_RATIO="0" ORDERLIST="0" />

<VALUE MAP_ID="1001" MAP="0" MAPNAME="BichonTown" SERVER="0" CHNSERVER="0" NEEDLEVEL="7" TIME="0" WEATHER="0" VEHICLE="1" PVP="0" MINE="0" CONTROL="" ENTERLV="0" ENTERQUEST="0" ENTERITEM="0" NORECONNECT="0" MINIMAP="1001" VER="200" APPLY_ROW="0" MAP_EXP_RATIO="0" MAP_DROP_RATIO="0" MAP_MONEY_RATIO="0" ORDERLIST="0" /><VALUE MAP_ID="1002" MAP="0_000" MAPNAME="TownHall" SERVER="1" CHNSERVER="1" NEEDLEVEL="0" TIME="1" WEATHER="0" VEHICLE="0" PVP="1" MINE="0" CONTROL="" ENTERLV="0" ENTERQUEST="0" ENTERITEM="0" NORECONNECT="0" MINIMAP="0" VER="200" APPLY_ROW="0" MAP_EXP_RATIO="0" MAP_DROP_RATIO="0" MAP_MONEY_RATIO="0" ORDERLIST="0" /><VALUE MAP_ID="1003" MAP="0_001" MAPNAME="TownHall" SERVER="1" CHNSERVER="1" NEEDLEVEL="0" TIME="1" WEATHER="0" VEHICLE="0" PVP="1" MINE="0" CONTROL="" ENTERLV="0" ENTERQUEST="0" ENTERITEM="0" NORECONNECT="0" MINIMAP="0" VER="200" APPLY_ROW="0" MAP_EXP_RATIO="0" MAP_DROP_RATIO="0" MAP_MONEY_RATIO="0" ORDERLIST="0" /><VALUE MAP_ID="1004" MAP="0_002" MAPNAME="TownHall" SERVER="1" CHNSERVER="1" NEEDLEVEL="0" TIME="1" WEATHER="0" VEHICLE="0" PVP="1" MINE="0" CONTROL="" ENTERLV="0" ENTERQUEST="0" ENTERITEM="0" NORECONNECT="0" MINIMAP="0" VER="200" APPLY_ROW="0" MAP_EXP_RATIO="0" MAP_DROP_RATIO="0" MAP_MONEY_RATIO="0" ORDERLIST="0" /><VALUE MAP_ID="1005" MAP="1" MAPNAME="LostParadise" SERVER="1" CHNSERVER="1" NEEDLEVEL="7" TIME="0" WEATHER="0" VEHICLE="1" PVP="0" MINE="0" CONTROL="" ENTERLV="0" ENTERQUEST="0" ENTERITEM="0" NORECONNECT="0" MINIMAP="1002" VER="200" APPLY_ROW="0" MAP_EXP_RATIO="0" MAP_DROP_RATIO="0" MAP_MONEY_RATIO="0" ORDERLIST="0" />

sed 's/NORECONNECT="[^"]*"/NORECONNECT="0"/'

NORECONNECT="foo"
NORECONENCT="bar"
NORECONNECT=""

NORECONNECT="0"

sed 's/NORECONNECT="[^"]*"/NORECONNECT="0"/g'

xml ed -u '//VALUE/@NORECONNECT' -v 0 file.xml