Ehud,
The site does not "take any of the deregistered profiles and use them instead of the active".
The site intends to include profiles for all aircraft whether registered or deregistered.
In the case you quote, the database provides for uploading photos to the currently registered aircraft as you have done and also for the uploading of photos to the other two aircraft profiles, whether taken whilst registered or after deregistration when they may be in museums, abandoned at airfields or awaiting renovation, etc.
Should a registered or deregistered aircraft not be found in the database, instructions for creating a profile and uploading a photo may be found under Quick Link - Upload New Aircraft Photo.
Malcolm Clarke
Admin.