Today I lost one of the new fav photographs.

I thought that if I collected the image, it's not nesessary to keep it in favs - and removed the fav.
After several hours of work I realised that I do not see it neither in the favorities nor in collection.

The thing is that I serfed through the deviantart imagery trying to find several things I needed. So now there's no chance to find that image even among the history. I don't even remember where did I saw it.

Be accurate. If you collected something, you still need to have it in favs also, not to lose.
Flickr works quite different, according to collections...