I just returned to Openstreetmap after a couple of weeks absence and I see that a lot of the data I put in is now missing. Many of the roads I entered have been removed although in some cases the points still remain as isolated green dots (in Potlach).

This is quite disappointing. Was there some kind of system crash? Am I doing something wrong? If it continues to happen, then its pointless putting data in here.

Ref. Makati, Manila, Philippines.