Hi Frederick,

re:
> I have not been able to upload an 8 MB (appx) file

You're probably out of attachment space, you can go to Options on the top bar, then "Attachments" on the left and remove some old ones to free up some space.

But it would be better to have a small simplified example.


> Question: does the forum save things I upload? If so how do I delete them once done with them.

Yes, when you upload an attachment it's saved on the web server. You can delete them using "Options" on the Top bar, then "Attachments" on the left.


re:
> Then the next time I needed to export:
> - "Run" the preset to re-select the same set of objects that were selected when the "preset" was created.

If you've edited some of the objects after the preset was made then you don't have the exact same set of objects anymore.

So it's not possible to just "re-select the same set of objects" when you don't have the same objects.

If you have some way of identifying the objects like they have the same name set on the original and the new edited version then that could work.

- Michael