I never received email confirmation of what I needed to attain in order to retain Gold after status match. I only received the following text below saying not to go by the 25K miles OR 40 flights indicated on the dashboard.

Renewal Conditions
Your new status will be valid for at least 12 months from the date of your Promotion. At the end of the Annual Miles Earning Period, your status will be regulated in accordance with the general regulations applicable to the TAP Miles&Go Programme.
While enjoying the benefits of the Status Match Campaign, that is to say, from the time of Promotion to the first Renewal, you are expressly excluded from the general Promotion, Renewal and Downgrading rules in force under the TAP Miles&Go Programme, even when possible application of the general rules will be beneficial for you.

We inform you that, due to technical reasons, the information you will find in your client area may be different from this. However, these rules will prevail for clients involved in the Status Match Campaign.