I have previously created a gallery page with 30 images. Everything was fine until I add new images from the media library. When I added two new images to the gallery making 32 images only the two newly added images show. The original 30 have vanished from the front end, although they still show when viewing the page in the dashboard.
If I go back in to the gallery and remove the two newly added images from the gallery and update, the original 30 images are visible again.
Is it possible to update galleries to add new images, or do I need to create whole galleries each time I want to update?