That's still an import. Quoting osm.wiki/Import : "Importing is the process of uploading external data to OSM." And osm.wiki/Import/Guidelines clearly say you need to discuss before import.

There are two problems with that approach:
a) OpenStreetMap is not about official data. Especially when it is clearly wrong. Actually it might well be that it is not wrong, but the coordinate datum is different and you did not account for that.
b) You can not add date to OSM without conflating it with existing data. The situation now is much worse than before. If you add data you must make sure to improve the situation, not make it worse, before you add the data. We have had too many imports where people promised to fix the data but never did leaving a mess for the community to fix.

The other question is: Did you consult with the community about this import of data as required by the import guidelines?

I suggest you revert your changes and *after* you have consulted with others and found out how to solve the problems do it properly.