Hi,
regarding this we cant merge using fromating sheet becasue these members are OLAP members if you merge it report will crash.. then the work around for this is create same header on top of the colomn axis and refer to the cells below and merge it arrodingly ... this will work dymanically when the report expands and the colomn axis count is fixed (ex: it has to expand for 1 year or some fixed count)
Thanks,
Rajesh