Asset STL depreciation method for remaining life conversion

Hello Everyone,

We are doing conversion including YTD depreciation and accum. depreciation, and dep. method(STL) will default from categories, by passing these values system is calculating depreciation from the current period as expected.

Question: For example my converted asset remaining life is 3 yrs 6 mnts, Is it required to create depreciation method(STL) for this remaining life? Will system do any wrong calculations if it didn't find any depreciation method defined for 3.6yrs. However the actual dep. methods are already defined as per asset category

Also I can see to remaining fileds in financial inquiry- DPIS and prorate ? which one is used for depreciation calculation(I believe it is DPIS)