Changing iPhoto Filenames

I'm using a new network drive that limits use of special characters in filenames. As a result, I need to change the names of some of my iPhoto pix that use special characters such as apostrophes and question marks.

I've made good use of the Title field in my photo labelling, and had thought that this had caused my filenames to inherit these Titles. So I had tried changing the Titles again, to effect changes in the filenames, to remove the special characters. However, that's not working; and I've been reading postings about filenames, now undestanding that this does not work this way. So I must have caused the fielnames to change during some exporting and importing, although I cannot recall doing that.

I actually have changed a lot of the Titles to contain the exact text I would like in the fielnames. But it seems like a radical approach to export all of my photos, simply so they can inherit the Titles, and then import tham back in, and have to make all of the Album adjustments. Does anyone have a suggestion of a better way to do this? I suspect it would be risky to edit the filenames within the Data files of the iPhoto folder, and suspect this might cause some "disconnection" between the photo files and the "structure" that iPhoto uses to organize them into its views as Libraries.

Appreciate any suggestions.