I need to import a population of mid-life assets that were historically depreciated using fixed declining but will use straight line going forward. I thought all I had to do was load them as declining balance along with a historical depreciation entry, then set last depreciation amount on the linked asset value based on the declining balance method, then update the assets to straight line and let the precompute depreciation process do its thing but…it’s calculating monthly straight line depreciation based on the normal (cc-rv)/al formula which is incorrect - it should be straight lining only the remaining balance as of migration against the remaining periods. Anyone know what I’m doing wrong?

Maybe you should be using the Straight Line Remaining depreciation method and not the usual Straight Line that's based on original useful life?

Yup! That was it. Thanks Luis!!