Gravity Forms site screenshot
This add-on for Broadcast adds support for forms created by Gravity Forms:
- After detecting the [gravityform] shortcode in the content the form is automatically copied / updated on each child blog.
- The Gravity Forms settings can be copied between blogs.
- Gravity View shortcodes [gravityview] are detected and the view copied to each child blog.
If you only have the Gravity Form ID in a custom field, then perhaps a snippet about faking a shortcode to broadcast a Gravity Form will help?