In import configuration new UI, editing an Object Type mapping with IQL Filter will wipe out the filter on save

Issue Summary

When editing an Object Type mapping with an existing IQL Filter, the POST request upon clicking "Save" will ignore the IQL Filter value, subsequently wiping out the IQL Filter.

Steps to Reproduce

1. Create an OT mapping with IQL Filter
2. Edit the OT mapping with IQL Filter and without changing anything, simply click Save
3. Go back and edit the OT mapping of IQL Filter again

Expected Results

IQL Filter retained

Actual Results

IQL Filter is now empty

Workaround

Upon entering the state on step 3. Go back and reapply the IQL Filter on the same OT. This time the save will contain the IQL Filter.

Verify that IQL Filter is saved by going back to Edit OT Mapping and see that the field is populated. BUT! instead of clicking Save to exit, click "Cancel"