OWL class restrictions are not generated in the expected way

[hentoilusose]

Describe the bug
When specifying class restrictions in OWL, they are not rendered into the expected LinkML structure. For example Object property between classes with a cardinality of [1..1] (from the MWE below) is rendered into:

slots:
  OProperty:
    slot_uri: https://foobar#OProperty
    multivalued: true
classes:
  A:
    slot_usage:
      OProperty:
        required: true
        multivalued: false
    class_uri: https://foobar#A
  B:
    class_uri: https://foobar#B

(the prefixes etc. are omitted)

Rendered into PlantUML from LinkML:

To Reproduce
Render MWE into LinkML:

Ontology(<https://foobar>
Declaration(Class(<https://foobar#A>))
Declaration(Class(<https://foobar#B>))
Declaration(ObjectProperty(<https://foobar#OProperty>))
SubClassOf(<https://foobar#A> ObjectExactCardinality(1 <https://foobar#OProperty> <https://foobar#B>))
)

Used command: schemauto import-owl test.ofn -o test.yaml
Schema-automator version: 0.5.3

Expected behavior

slots:
  OProperty:
    slot_uri: https://foobar#OProperty
classes:
  B:
    class_uri: https://foobar#B
  A:
    slot_usage:
      OProperty:
        required: true
        multivalued: false
        exact_cardinality: 1
        range: B
    class_uri: https://foobar#A

(the prefixes etc. are omitted)

Rendered into PlantUML from LinkML: