Well,
the mappings (which are the basis of the corresponding deploy-file) are also available on the file-system in the folder
\SEEBURGER_Mapping_Designer\user\bicmd\...
So if you have created some user-specific BIC-Mappings you should be able to retrieve them from there...just make sure that the directory, where the BIC MD is installed is still available with all its objects in case you need to make any modifications in future.
Regards
Stefan