/patch4/common/scenario/bmap/ has SC00_11, SC01_01 and SC01_11 in both .bsi and .bai.
/patch3/common/scenario/bmap/ has SC00_10, SC01_04, SC02_02, SC02_03 (only .bsi), SC02_06, SC03_07, and only .bsi for SC04_00 through to SC04_19.
/patch2/common/scenario/bmap/ has SC00_09, SC01_02, SC01_03, SC02_03 (only .bai), and SC03_15.
/patch1/common/scenario/bmap has SC01_09, SC02_04 (only .bsi), SC02_05 (only .bsi), SC03_10 (only .bsi), and SC03_19 (only .bai).
I don't see the prologue map in my files, for example.