ok.
so if its limped to me in the BU and i raise, this counts toward both my PFR and ATS
if its folded to me in the BU and i raise, this also counts toward both my PFR and ATS
if its raised to me and i 3bet this only counts toward my PFR stats
is this correct? i assume by "unopened" you mean raised. in which case the only scenario in which a BU raise could be differentiated from ATS is when i 3bet.