Hi,

I am going to change my internet provider.
What should I do step by step? Which configuration will I need to change in Winbox?
I would like not to start from scratch and then import my config files.
How to recognize IP, gateway etc. from my future provider?

Regards
Martin

It depends...

What medium (cable/xDSL/Fibre), current and future?
Do you have any other hardware involved on being able to connect to the Internet (like a modem)?
If so, what modem do you currently have (from your current provider)?
What modem will you get from your new provider?
How is the router configured (/export hide-sensitive file=anythingyoulike)?

Can you please add any relevant information?

No, it does not depend...

You need to configure your router the same way you configured previously for your current ISP.

No, it does not depend...

Well, actually...

Perhaps you forgot the situation that the ISP requires a PPPoE configuration?
Or it requires VLAN configuration on the WAN side (in case of fiber)?
And there might be more situations that a change is required.