Metadata Provider for FilesystemMetadataResolver Multiple Edits won't save

Tested in version 1.5.0-SNAPSHOT-5dab7dd

I believe this is a back end issue. According to Ryan, there is nowhwere to store this value.
Description
User is unable to save an edit of Metadata Provider, FilesystemMetadataResolver type when the Initialize True/False radio button is edited.
 
Steps # Log into UI

1. Click 'Add New' button and select 'Metadata Provider’
2. Select Metadata Provider Type: FilesystemMetadataResolver
3. Leave the Intialize radio button on False default selection
4. Continue filling in required/valid details and save
5. Click Edit button for the item you just created
6. From the Common Attributes page, change the Initialize True/False and click 'Save'

 
What is occurring
Provider will not save.
 
What is expected
Provider should be saved or give a client-side error to notify user if something needs to be resolved before saving.
 
Video Attached

edits won't save
 
Error Code
VM164:1 PUT https://shibboleth-ui.unicon.net/api/MetadataResolvers/2105686e-ab4e-42e0-bba3-593be52c1f7c 409