After searching for tool to detect changes in road network I came across with this tool. I ran it on two time-different road databases. The results are graphic display and attribute table. In attribute table you get information for instances if there is attribute or spatial change. More about this tool you can read in ArcGIS Help.
For example: in attribute table that indicate changes are 622 features with attribute S which indicates spatial changes between old and new dataset. It can mean that new part of road was additionally build (road was upgraded) or destroyed for example.
What I would like to do is to select all ObjectIDs in old dataset that has attribute S in the table that indicate spatial changes and delete them also in old dataset.
I assume this can be done quickly with python. But I do not know much about python so I would appreciate your help!