Recently I saw one post on Adobe Forums where one of our elements friend was not able to find his files which were imported two months back. Since there can be multiple reasons of files missing in a catalog, so it was not an easy task to guess what all could have caused this. Here I would want to share few basic things that give information about files in a catalog, how they are shown in different views, count, hiding some particular files etc.
Here is some information which may be helpful for troubleshooting problems of not finding files...