1) I have migrated a lot of articles from Joomla 1.5 to joomla 3. Migration went on mostly fine. However, there are a couple of articles which do not get saved when I press the save button in article editor. It does say error while saving article but doesn't mention what error.
2) I looked into the asset table after someone mentioned that the integrity of my asset table may not be correct. I was confused when I saw the different columns. Hence my 2nd question is what is Nested set Parent, Nested set lft and nested set right in the asset table. do lft and right need to have unique values?