- I deleted all the snippets I had not been using to eliminate unnecessary work.
- I exported the remaining snippets using the web interface at TextExpander.com
- I used a PHP script to migrate the TE snippets to Alfred snippet. For some reason I am not able to find the script again.
- I had to do some work in Alfred to get variables for time and date and stuff like that working in Alfred. So it was no fully automated process.
While looking for the script, I found this though (I was not aware about that before):
@dfay has built something that migrates snippets from TextExpander to Alfred using AppleScript.