As I understand it those commands only reveal the map, they don't actually generate the local terrain until you actually go to those areas. so unless you have been sailing all over the map you might be fine.

The thing to remember is that the game generates terrain out to 500 meters from you as you explore, so even areas you have not actually been into yet are locked.

if you use mods you could try
https://valheim.thunderstore.io/package/JereKuusela/Upgrade_World/

it resets your world beck to the unexplored state so the game regens the terrain using the new content. The mod also lets you exculde areas so your basses or areas you like don't get erased. Be sure to make backups before using