In weekly mode, tasks starting in the first calendar week of 2025 were not correctly loaded into the resource plan. If the task’s start date was set to December 30, 2024, the effort was incorrectly assigned to week 1 of 2024 due to the ISO week date system.

Scheduled from 1 January for a month for 160 hours:

Amount that is loaded on resource plan is 136 hours:

Changing the start date to 2024-12-30:

Hours loaded for 2025 reduces to 120 hours:

Other 40 hours are now in week 1 of 2024:

Task synchronization in weekly mode has been fixed. Effort is now properly assigned to the first week of the correct year, even when the start date falls in the previous calendar year.