Imported schema constraints not working in the validate operation

[vpdesai21]

I have a nested schema structure, where the imports are as follows

schema1 ----> schema2
schema2

I am using a custom authority loads all the schema in a given resource path in a jar.
The validation steps :

1. Take input as <raw_data, schema_path> to validate against.
2. Load the schema at the <schema_path> at runtime
3. validate the <raw_data>

The validations do not return any violations in the <raw_data> corresponding to "schema2" that is imported in "schema1".
The constraints & violations in the "schema1" work fine.

Note - The validator mechanism in the example below uses default authority.

For eg.
schema1 - ClassRoom.isl
schema2 - Students.isl

Schema / Input Details -
https://gist.github.com/vpdesai21/bd80bb76d64aa394eac2bdbc58b70085

Constraint not working - https://gist.github.com/vpdesai21/bd80bb76d64aa394eac2bdbc58b70085#file-students-isl-L15