You can open all Developer Studio files in App Studio. If you choose to edit these files in App Studio, consider the following recommendations.

• When saving your changes, choose the Save As option. This option saves the file under a different name without changing the original file.
• You can run Developer Studio and App Studio simultaneously. However, it is not advised to edit the same file in both, at the same time.
• You can edit procedure (.fex) files in App Studio and Developer Studio if the features that you use to edit those files exist in both products.
• When you open an HTML page in App Studio, the HTML page will undergo a conversion process. The conversion occurs in memory. You may execute the page in App Studio to verify correct functionality upon execution. If you save the page, the converted code will be saved. If you exit the tool without saving, the converted code will not be saved. You cannot reopen converted pages in Developer Studio. Only HTML pages created in Release 7.0 Version 6.9 and higher can be directly converted. For earlier releases, you will need to first open your HTML page in a Release 8 version of Developer Studio, and save it, before opening it in App Studio.
• You can open, edit, and run existing Visual Discovery dashboards. However, you cannot add additional Visual Discovery controls. You can edit existing Visual Discovery controls in the Settings panel, in the HTML canvas. To create new Visual Discovery dashboards, you can use the Visual Discovery Advanced Edition (AE) Workbench.
• Maintain development is being integrated into App Studio as part of the HTML canvas, in a future release. To create Maintain files, continue to use Developer Studio.