IDP Interaction With Multiple Attribute Filter Sources?

[Rod Widdowson]

> Rod would know for sure and he's probably offline for the day, but I believe it's just a pile of policies processed in sequence 

Mea maxima culpa I meant to reply last week. 

TL;DR This is absolutely correct.  The details are explicit in [1] 

/R

[1] https://wiki.shibboleth.net/confluence/display/IDP30/AttributeFilterConfiguration#AttributeFilterConfiguration-Semantics