they should be pretty easy to find in the backup configuration folder.
in the configuration folder, go to webassist/shared.
then open the folder for the product you want to find the presets for, for example, the dataassist design presets are under:
Shared/WebAssist/DataAssist/XML/Designs
application type presets are under:
Shared/WebAssist/DataAssist/XML/Schema
you should be able to locate the XML files for your presets and copy them to the active configuration folder.