After a few discussions on the mailing list we should update the ChEBI manuals.
1. Merging
We should describe the case for merging and what happens to the ids.
Example GO: http://wiki.geneontology.org/index.php/Curator_Guide:_Merge_Split_Move
2. Status changes
We should describe what happens with status changes i..e checked and deletions
http://wiki.geneontology.org/index.php/Curator_Guide:_Obsoletion