ANSWER FOUND! It's quite simple. This issue is if your working on the "Project Map" rather than the "View Map" the Schedule will inherit any random Renovation Filter which might be active in my case one that is not showing new elements, just place that empty schedule on the View Map" and save it with the desired Renovation Filter
AC26–5002 INT FULL/ Win 11 Pro 22621.1992 / Intel i9-13900KF 24C (8P-16E) 3.00 - 5.80 GHz / 64 GB 5600 MHz DDR5 / Nvidia RTX A4500 20GB, Dual 2560x1440.