How to make an old cookie-file not valid any more?

[zeldalegends]

Hi,

I have fetched a token and saved it in the cookie-file correctly in a past project. Now I have created another project with another Node-RED installation, and I would like to authorize ONLY this new Node-RED installation with the same Alexa Echo Dot. At the same time, I would like toget rid of the former Node-RED installation an prevent it to access Alexa Echo Dot for security. So, I fetched a new token and saved into a new cookie-file for the new Node-RED installation, but unfortunately the old one is still working in the previous project... I would like to avoid that the old Node-RED can access Alexa with the old cookie file.

How can I do?

Thanks