Bumping occurs when a user logs in using the ID and password of an active agent. The user who is logging-in sees a message that an agent with this login ID is already active. If the new user procedes, the old user is disconnected. The agent uses the saved configuration of the agent, not necessarily the configuration of the previously active agent.
Bumping of an active Seller agent is very disruptive to the auction. You should not do this without good reason.
The agent that takes control of an existing agent by bumping it starts with the profile stored in the garage. Any changes made to the profile of the bumped agent that are not saved are lost.