In Web:
When you open a document with default view " Export to excel", it downloads the document and prompts to be opened in excel as shown in the screenshot.

And when clicked "ok" , it opens the document in Excel as shown in this screenshot.

In Mobile:
When you open the same document in Strategy mobile app, it opens the document as an interactive document as shown in the screenshot.

CAUSE:
Strategy Mobile App only support " Export to PDF". This is a current limitation.
ACTION:
Currently this feature is still being reviewed for feasibility by our Technology team and it is not scoped for any upcoming scheduled Strategy release.
Article Number :
KB439535