Thank you for published workarounds, just a note.
Both of them suppose that indicators and experts attached to the offline chart use other method than OnCalculate, OnTick or start(). That means they are not a solution for ready-made ex4 indicators and experts.
That means they are not a solution for ready-made ex4 indicators and experts.
The same solution as in the build 509
For info . . . reported to the Service Desk asking to update the Documentation.
please update the documentation for FileOpenHistory() https://docs.mql4.com/files/fileopenhistory