History of Master Data

Hi experts,

Between 2 infocubes, i have a full DTP restricted with an abap code on current period.

I am deducing some information in target Infocube from a master data. Let’s say in March 2013 the cube was as following:

In the meantime, the information X in master data changed and become Y. So the infocube today is as following:

Business expects that the deduced information change in the past also.

I can in fact delete the history of infocube and reload it again, but that’s  too much. Is there any way in BW to perform it automatically?

PS : The deduced information can’t be a navigation attribute, it’s a calculated master data regarding some infocube axis.

Thanks.

Amine