Importing CSV data in PODS relationship dropdowns

Hey Folks, Need a a lil help here.

BACKGROUND:
We actually want to import data into 4 different custom post types which we made through a plugin named “PODS”. Now we want to import data into those custom post types for which we have prepared CSVs. We are yet able to import all of the non-relational fields but there’s a problem for importing fields which have relationships to each other.

PROBLEM:
The problem is that we aren’t able to import relationships between all custom post types. For example, there a field in custom post type named “Courses” where there is an option to select “Institution” (its a dropdown). Those institutions are coming from another post type named “Institutions”. When we try import data into “courses” post type, all of its fields get populated except for relationships fields which are dropdowns.

How can we also populate those relationship fields (dropdowns) in posts when importing data through a CSV?