Alembic Mesh export with Material ID

[Moley]

So I found a way to make this work. As Tyson suggests add a mesh operator to the end of all your flows and uncheck render only. Then add an edit poly modifier to the tyflow icon. Then export selected as alembic from the max file menu. Make sure to check Material ID in the export dialog. This seems to work for me. When I reimport the alembic the material ids are present. Hope this helps.