Upload initial balances data in group reporting

Dear experts,

I would be very grateful if someone could solve a doubt when loading the data of some companies that I am integrating in SAP Public Cloud group reporting.

We have created a consolidation group that will start consolidating in period 01 of 2024. All the companies that make up the group will be integrated in SAP.

My doubt arises when it comes to perform the first consolidation in the period 01 of 2024, since I do not understand very well if it is enough to load balances of the companies as of December 2023 in general accounting (not in group reporting) and through the data monitor and the task Balance Carryforward all this data will already appear as of January 2024 in group reporting or if you must also perform a data load in group reporting.

Regards