transfer data from hbase0.98 to hbase1.1.0 using exportSnapShot

[whodarewin2006]

hi,
    We  upgrade our hbase cluster from hbase0.98.6 to hbase1.0.1.1,and we want 
to transfer our data from old cluster to new cluster using ExportSnapshot,is 
this OK?Will this operation crash our new cluster down cause different file 
format?