The following works [Any date after YYYY/MM/DD]
write:2013/05/20.. //Encoded as a=write%3A2013%2F05%2F20..
The following does not work [Any date before YYYY/MM/DD]
write:..2013/05/20 //Encoded as a=write%3A..2013%2F05%2F20
I have checked ULS and the error is because the date range wildcard '..' is unexpected
exact exception Microsoft.Office.Server.Search.Query.QueryMalformedException: parsekw: QTF_ParseKW: Unexpected Token - .. at postion: 32