Does your event come back, for example every year? Then create a new edition instead of a new event. That keeps all your editions together and lets you start from what you already have.
Create a new edition
Open your event from Events and click New edition. Or go to Events › New event and choose A new edition.
Choose the Event, if it isn't filled in yet.
Give the edition an Edition name, for example the year. Each edition of an event has its own name.
Want to start from an existing edition? Check Copy from a previous edition and choose which edition to copy.
Click Create event.
If you don't copy, you start with an empty edition, and the same steps as for a new event help you get going: dates, location and tickets.
What is copied?
The edition's settings: location, introduction and more information, your messages, the required fields and other preferences, the theme color, the background color and the background settings.
Your tickets and extras, with their groups, price, limit and other settings. Their dates, publication dates and sales period are empty.
Your shows, with the tickets linked to them. Their dates are empty and they are all turned on.
Your default sales channel, with its settings, but not published and without publication dates.
What isn't copied?
The edition's dates (start, end, doors).
Your images: cover photo, logo, background image, social media preview image and ticket images. Upload them again in Settings › Design.
Your other sales channels, deals, capacities and integrations.
The questions you linked to tickets.
A seatmap that was linked to a show.
Orders, invitations, customers and sales figures.
So your new edition starts without sales and isn't published yet.
Next steps
Set the new dates in Settings › Event, or in Shows.
Upload your images in Settings › Design.
Check your prices and limits in Tickets, and the date from which tickets can be downloaded if you use Delayed download (Settings › Preferences).
Test your store with Test store and publish it.