V8 family randomly becomes an I6 family

so i was just building a car, and i went to try to find my small block family from the drop down list, however i couldn’t find it. puzzled, i went to another vehicle i knew for a fact i put it into, and the family now read as “straight-six” and the year was 1991, despite the first variant of the engine being in 1948. the variant names are intact along with their options, besides for the fact that it is, well, now an inline 6. here is an export of the"straight-six" family along with an older (so doesn’t have all the variants) export of the small block V8 family

cpufreak101 - Straight-6.zip (45.2 KB)

cpufreak101 - VT-150 ‘small block’.zip (13.1 KB)

update: doing an import of the old small block export appears to have straightened everything out