Parameters saved?

Exactly what parameters does AL save in an .amb file? I seem to save a file and the assigned pallette (from the pre-baked, not custom) does not 'stick'. The 'default' (i.e., red) loads instead. 

This is still a problem. When I select the data file in Finder the thumbnail shown has the pallette I assigned to he image, but when opened (either with Open Recent... or Open) the default (red) pallette is assigned. What am I doing wrong?