Hello,

Your edit broke cycle routing and cycle relations.

It looks like you are editing without local knowledge.

I want to inform you that in Brussels, most one-way streets have exemptions for other modes of transport, most often for cyclists.  It is very rare to see a street with "oneway=yes" and no such exemption; we always endeavour to carefully review the road signs before updating the map.
I fixed this one and will review your other "oneway" changes.