Adresse Change and caldav/carddav clients

I need to change the change my nextcloud server address. In the forum I found solutions for changing the URL for file synchronization on desktop clients. What I did not find is a solution how th change the URL in DAVx5 on Android.

What will happen, if I delete the old nextcloud server configuration in DAVx5 and add a new one? Will this result in double contacts, tasks and calendar entries? Doesn anyone have experience with such a situation?

This isn’t the right forum to ask question about the DAVx5 software. You will find the DAVx5 forum here. Please also have a look on the FAQ. BTW, afaik it isn’t possible to rename an entry, you have to delete and add it again.