I had a design with two clippings mask applied to it, for layout and previewing purposes.
When time to export a final image comes, I hide the top-level smaller one, and leave the larger one at the bottom to clip my design.

But when I review the exported image, I realize Illustrator removed the some elements of the design, despite me seeing them on canvas. It took a live brush and deleted some parts of it even!

Take a look at the file attached.
1. Open it
2. Study the layer structure, notice a hidden clipping mask. Note the design now is clipped to the artboard’s boundaries — this is what I expect to get on export
3. Export the document to a TIFF, with any settings
4. Review the image, notice missing elements

Workarounds are known to me. Again, I have my reasons to have this completely legal layer structure, to have one mask hidden, and to have the other one kept (this test document is a distilled version of a larger one I had with many more artboards).

Please address this.