Reverting to being a sole trader after general partnership

I recently registered for a general partnership but called HMRC to cancel it only a week after receiving confirmation. I didn't add anyone else to the partnership and haven't traded under the partnership name at all. Prior to this I was already registered for self assessment and have been a sole trader for many years. I'd like this to continue and for the brief period under the partnership to be disregarded. I was told on the phone call I would need to re-register for self assessment. However, my online Personal Tax Account shows my self assessment account and existing UTR are still active. Do I need to register again for self assessment?

Hi,
No, as you already have an existing record. Just put a note in the comments section when completing the return to confirm the partnership did not actually trade.
Thank you,

Thanks a lot. It would be great if you could cascade that to your telephone customer advisors as I was given incorrect information.