Q discussions in AWS console environment

When you start a new conversation with Amazon Q in the AWS console, you generally cannot return to older conversations from previous sessions. Amazon Q maintains the context of your current conversation within a given session, allowing you to ask follow-up questions and refer to previous questions and responses throughout that session's duration. However, when you choose to start a "New conversation," it clears the current conversation and starts fresh without any previous context.

If you're using Amazon Q in the AWS Management Console, your current conversation and its associated context are maintained even when you navigate to another place in the console or to another browser tab. This allows you to continue your ongoing conversation seamlessly within that session.

It's important to note that if you change the encryption key used for Amazon Q chats in the AWS console, you must start a new conversation to begin using the new key. In this case, your conversation history encrypted with the previous key won't be retained in future chats.

Given these characteristics, it appears that Amazon Q in the AWS console environment is designed to focus on current, active conversations rather than providing access to a historical log of past discussions. If you need to retain information from previous conversations, it may be best to copy or save important details externally before starting a new conversation.
Sources
Chatting with Amazon Q Developer about AWS - Amazon Q Developer
Data encryption in Amazon Q Developer - Amazon Q Developer