See the "CC-BY 4.0 International" row at https://wiki.openstreetmap.org/wiki/Import/ODbL_Compatibility , which links to https://blog.openstreetmap.org/2017/03/17/use-of-cc-by-data/ which I linked to earlier.  The Licence Working Group says that you need to get explicit permission before any data is imported.  If that hasn't already happened then you need to sort that out before doing anything else, and if you can't sort that out we'll have to remove the data already added.
However, given that presumably you either are or deal with someone who can issue such a waiver, I presume that this won't be a problem?
Best Regards,
Andy Townsend, on behalf of OSM's Data Working Group.
