Dear Mukthar,
As you said If I open the periods the Posted depreciation will get disturb for the fiscal year 2015. Which we don't want to happen. So, we would go for the second option you referred that is closing of the Asset fiscal year 2015.
But I have another query like shall we close the fiscal year 2015 in Asset accounting for time being till the depreciation start date changes takes place. once it is done, can we revert the changes back to OAAQ 2014. please let me know is it right approach or not.
BR
RR.