Do you mean flatten a layered Photoshop file to a single layer? If so, I don't know of any way to do that in InDesign. Why would you want to do that since all you have to do is choose Edit Original and do it in Photoshop?
Thanks but my question was poorly put.
Here's the story. I have 82 pictures with captions.
A vendor (bookbaby) is preparing an epub from my pdf file exported from indesign.
Trouble is, their process doesn't keep captions and photos together.
I've now outlined the text in the caption so it's no longer editable as text -- and the numbers overlaid on the collage attached (in indesign), and I've surrounded the. picture with an outline, but the captions, outline, and photo are still all separate.
If I export the indesign photo page as a pdf, open it in photoshop, and flatten it in photoshop and bring it back into indesign, it's all one picture
I have 82 photos with captions. Surely there's an easier way?
Will it work if you group the caption and image , then "paste into" a new frame?
Another question for the OP is what version of InDesign in use here. One
could argue that the biggest advances in the last few releases have been in