If you are unable to split company at location C, you need to follow the below steps:
First, you need to check whether it is Access or SQL.
Step 1: In the case of Access Data Base, you can split data companies. Before opening the company in BUSY, from the split company option, you need to select the company and then select the financial year for which you want to split, and it will split your financial year.
Step: In the event that SQL data base SQL 2019 is not supported, make sure you install the SQL 2017 version to split the financial year.