Here you can find all basics of BAS. Make sure to
study topics and tutorials presented there and you
will be ready for production >
https://wiki.bablosoft.com/doku.php?id=start
Regarding your question, you can use same action that
you used to create that particular profile. So if the profile
already exists BAS will load it from that location, and if given
location (filepath) does not exist than BAS will create it.
You could find and read that info inside BAS - almost every
action have detailed explanation inside action itself - just click
on "More info" link inside any action. There you will get detailed
explanation of action capabilities and sometimes some examples
or links to further related explanations.