It may depend on the what type of property the asset was.

Asset type

Depreciation method and life being used etc. 

The amount of depreciation taken (roughly 2/3 of cost in 17 years) seems unusual making it seem like it might have been Residential rental property, but then the sales price seems likely too low, for that to be the case.

If the depreciation was originally set up in an unusual way maybe that is confusing Pro Series.