UNION not working with caveats

[okennedy]

    Resolved attribute(s) __MIMIR_ATTR_CAVEATTED__A_7394#7507,__MIMIR_ATTR_CAVEATTED__B_7395#7508,__MIMIR_ATTR_CAVEATTED__C_7396#7509,__MIMIR_ATTR_CAVEATTED____MIMIR_ROWID_7397#7510,__MIMIR_ROW_CAVEATTED#7506 missing from A#7101,B#7102,C#7103,__MIMIR_ROWID#7231L,__MIMIR_ATTR_CAVEATTED__A_7101#7454,__MIMIR_ATTR_CAVEATTED__B_7102#7455,__MIMIR_ATTR_CAVEATTED__C_7103#7456,__MIMIR_ATTR_CAVEATTED____MIMIR_ROWID_7231#7457,__MIMIR_ROW_CAVEATTED#7453 in operator !Project [A#7101, B#7102, C#7103, __MIMIR_ROWID#7231L, __MIMIR_ATTR_CAVEATTED__A_7101#7454 AS __MIMIR_ATTR_CAVEATTED__A_7101#7512, __MIMIR_ATTR_CAVEATTED__B_7102#7455 AS __MIMIR_ATTR_CAVEATTED__B_7102#7513, __MIMIR_ATTR_CAVEATTED__C_7103#7456 AS __MIMIR_ATTR_CAVEATTED__C_7103#7514, __MIMIR_ATTR_CAVEATTED____MIMIR_ROWID_7231#7457 AS __MIMIR_ATTR_CAVEATTED____MIMIR_ROWID_7231#7515, __MIMIR_ATTR_CAVEATTED__A_7394#7507 AS __MIMIR_ATTR_CAVEATTED__A_7394#7516, __MIMIR_ATTR_CAVEATTED__B_7395#7508 AS __MIMIR_ATTR_CAVEATTED__B_7395#7517, __MIMIR_ATTR_CAVEATTED__C_7396#7509 AS __MIMIR_ATTR_CAVEATTED__C_7396#7518, __MIMIR_ATTR_CAVEATTED____MIMIR_ROWID_7397#7510 AS __MIMIR_ATTR_CAVEATTED____MIMIR_ROWID_7397#7519, (__MIMIR_ROW_CAVEATTED#7453 OR __MIMIR_ROW_CAVEATTED#7506) AS __MIMIR_ROW_CAVEATTED#7511]. Attribute(s) with the same name appear in the operation: __MIMIR_ROW_CAVEATTED. Please check if the right attribute(s) are used.
    in
    (SELECT * FROM r) UNION ALL (SELECT * FROM s)