Complex sentence: Some on-street sections of track have a special foundation with cobbled road surfacing designed to be sympathetic to the style of Edinburgh streets, but this was removed in many places due to objections from cyclists.
Split into simpler sentences: Some on-street sections of track had been laid into a special foundation with cobbled road surfacing designed to be sympathetic with the existing style of Edinburgh streets. This, however, was removed in many places due to objections from cyclists.