I don't know how well documented this is, but I searched a good bit and couldn't find anything about it, so I figured it would be handy to post it.

It's very easy in SugarCRM to make any import mapping available to all of your users!

First plug into your SugarCRM database. I'm using a MySQL database and I used MySQL query browser. There's a table called import_maps, which stores all of the import mappings any of your users have ever made. There's a field in there called is_published. private = "no", public = "yes"

Also if you look at the "content" field it's pretty straightforward to edit the mappings

Change is_published to "yes" and all users will be able to choose it when importing data

Administrators can un-publish or delete mappings at the same point in the SugarCRM interface.