Can I save the filename as a keyword on importing?

Question

I'd like to automatically save each photo filename as a keyword for that photo, so if the file name is changed later through different versions it retains the original filename within its EXIF information to identify it, preferably while importing it.
I there some form of dynamic keyword that lets you have Aperture replace it with the current file name?
Thanks for your kind assistance. 

Answer 1

A good idea, but afaik, there is no automatic keyword assignment, that reads the EXIF data.
You can automatically assign a set of predefined keywords on import or using Metadata > Batch change, but that will not help in your case.
so if the file name is changed later through different versions it retains the original filename within its EXIF information to identify it,
The original imagefile will always retain the original image filename, unless you change it on purpose, when you rename versions by using "Metadata > Write IPTC Metadata to original". If you do not modify the originals this way, you will always be able to revert to the original filename.
One more thought - if you create a new keyword for each and every image filename, your list of keywords will quickly become bloated and useless, since you can have 1000000 different images in your library.  Consider to write this information into a comment field or create a custom metadata field instead. You could then create an Apple Script to save the original filename to this custom field.