Problem with selecting another proxy, which is not correctly cofigured

[matleppa]

Prerequisite

• an API exists
• two proxies,
  • proxy A is configured OK and working
  • proxy B is not working

Steps

1. connect API to proxy A (Save configuration)
2. changed connection, select proxy B (Save configuration)
3. try to reconnect to proxy A (Save configuration)

Results

1. connection succeeds, proxy backend is visible both on platform and on apiUmbrella
2. connection failure with error message
3. Connection failure with 404

Expected results

1. Connection succeeds
2. connection fails
3. connection succeeds