Export settings not saved with project

This is very old and not a showstopper, but could make life easier.
Clicking trought all these options every single time sums up for wasted hours worldwide.

Could we please have LMMS save export settings, and recall them on reopening the export dialog and loading a project?

Also, could the defaults that LMMS uses for new projects be changed by the user too? Maybe adding a pair of buttons "Set as Defaults" and "Reset Defaults" in the Export dialog could be an option?

What do you think?

Start at the export dialog and the project loading and saving behavior described in the issue. Define how export settings should be stored with projects and how user-set defaults apply to new projects; done means reopening or loading restores settings and users can set or reset defaults.

Written by the indexing model from the issue text.