https://hgworlds2021.mk/event-potponed/

Due to the current COVID situation and free travel across borders
in agreement with CIVL we have decided to postpone the scheduled pre-worlds for
mid August.

New dates are 16-23 August, 2020.

Competition will be run as multi class event for class 1 and class 5 pilots.

Isn't the new date about the same as the previous date basically -
mid August, 2020?

Stef Malbos wrote much earlier:

2021 – We have three World championships. None of the organisers
have agreed to postpone to 2022 as they are already too committed (sponsors,
administrations, volunteers). The mandatory 2020 test-events for these World
championships are forfeited.

Dates:

16-23 August, 2020 - pre Worlds

04 - 08 Aug, 2020 - Italian Open.