Why 2024 scilab/Xcos file dont open or work older version?

General usage
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1- There is a lot of instability and crash during using of 2024 so I try to open with 5.2.2. why I cant open it ?

2-Anyone has solution to it?
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There is no upward compatibility, you cannot open an Xcos file saved in Scilab 2024 using Scilab 5.