Need to be able to On premise Gateway Cluster on a connection

[MartynR]

We are currently unable to edit the on premise gateway cluster on a connection.  We understand this to be a current limitation.

To have to recreate all the connections and redirect all pipelines to the new connections can be a large amount of work.  Please add the facility to allow edit of gateway clusters on a connection via the existing drop down which is currently non-editable.