Conversion of Transaction Data ( 13 periods to 12 periods)

Hello All Gurus,

Can anybody help on how to fix the following issue. Presently, I have been reporting my finanacial data in 13 periods for the fiscal year. Next year I will be changing it to 12 periods with a new variant. I would like to convert if possible the reporting periods of last year(s) from 13 reporting periods to 12 reporting periods, the reason being to enable me enhance some comparison in my reporting/financial data.

Is it possible to do that, I have seen a clue in SLO, but are there other alternative to realise this ?

I would be waiting for your response and thanks in advance

Cheers

Elvis