In many companies, yes. They often require the same Visio version to avoid layout changes, missing shapes, or compatibility issues when sharing and updating existing diagrams.
This can happen. That’s why many users stick with Visio 2010, as it preserves the original layout, fonts, and shapes used when the files were created.
Yes. Visio 2010 is still accepted for client documentation, especially when clients themselves use older Visio versions internally.
Standard is usually enough for flowcharts and org charts. Professional is chosen when working with technical diagrams, networks, or more complex templates.
Many companies reject this because free tools can’t properly open or edit Visio files. Visio remains the standard format in many organizations.