Incremental partitions in a cube: very urgent

[extask]

hi

currently v r havin cube in which data is being populated on incremental basis based on loading date... means there are multiple partitions...
[Ex: suppose v r loadin data on mar12(partition will be created on this date, which is loading date) it may consists of mar 11,10,9.... up to 120days...]

is it possible to load cube .... vth incremental loading on each partition based on originating date..... i.e,
[Ex: suppose ther partition for mar9, mar10, mar11-these are originating date
on mar 12 ther possibility of getting mar9 data also.....
previously v added tht data under mar12 itself....
now we want to have it under mar9 partition..... ie incremental partition]