Hi Demostenes,
Oops, when you requested the ability to save alpha map settings in your first post, I should have realised you also wanted to load alpha map settings. Unfortunately, L3DT doesn't have a way to import previous layer settings into the alpha map wizard. I'll put this on the development plan.
The nearest equivalent is the '
Extensions->atFilterAM->Alpha export express' menu option (
user guide is here). This feature can combine alpha layers using 'filters', which you can easily apply to multiple maps (the filters are stored by L3DT, and can be used again later). Please note that this feature only generates alpha maps at the same resolution as the attributes map. If you normally use different resolutions for your attributes and alpha maps, this feature isn't for you.
Best regards,
Aaron.