AS OF 2.5
Feed settings are exported and imported with the form.
Use this snippet to save a copy of your feeds. It’s then safe to uninstall the feed add-on.
Replace wp_ as appropriate if you use a non-standard table prefix.
wp db export \
--tables=wp_gf_addon_feed \
--no-create-info=1 \
--where="addon_slug like 'systasis%'" \
/tmp/outfile.sql
Restore the backup:
mysql [-uUSERNAME] [-pPASSWORD] [wordpress database] < /tmp/outfile.sql