How to remove the IKEA KVARTAL running rail from the track?

Hello dear Ikea fans,

I bought new Kvartal sliding curtains from Ikea and want to replace the old ones. But how do I get the Kvartal rail out of the track? Do I have to dismantle everything or can you simply click out the Kvartal rail? Unfortunately, it has been so long that I forgot?

Thanks for your help!

As far as I know, just click out.