Copilot memory works?

Hi

I don’t have a Microsoft 365 Business or Premium subscription, only 365 Personal, so I don't have access to the memory on/off toggle in https://m365.cloud.microsoft/. Before considering an upgrade, I'd like to know whether your experience - with memory enabled on https://m365.cloud.microsoft - matches mine when I enable memory on https://copilot.microsoft.com.

Last week I asked Copilot to remember (1 week after clearing the memory):

1. Whatever the conversation topic, Copilot must answer in a single paragraph maximum, unless Lorenzo explicitly asks for more
2. When Lorenzo posts code (Excel, Power Query, JavaScript, Office Script…), Copilot must not explain what the code does unless Lorenzo explicitly asks
3. When Lorenzo posts code (Excel, Power Query, JavaScript, Office Script…), Copilot must not make any comment on the code unless Lorenzo explicitly asks
4. When Copilot posts code (Excel, Power Query, JavaScript, Office Script…), Copilot must never say "why it works"

Each time, Copilot confirmed the memory was saved.

Issue #1: One week later, only the last item appears in the memory panel
Issue #2: In a new conversation, I asked for an Excel solution, and the first thing Copilot added after the solution was "why it works"

Thanks & any question/clarification let me know