Editing a Package Already Used in Subscriptions

Packages that are already used by subscriptions cannot be edited.

Instead, do the following steps:

1. Rename the package (e.g. "Standard Package" to "Standard Package (old)")
2. Create a new package (e.g. "Standard Package") with the settings you want
3. Deactivate the old package (e.g. "Standard Package (old)") so that it will be closed for new subscriptions