The Data Export links in the UI (Disk symbol below tables and graphs - "Export this dataset in other formats") always have the parameter filter_limit=100
The filter_limit should either be unlimited or have the value of "Rows to display" right next to it whereby the "Rows to display" should have an option "all" as well.
Attachment: Screenshot Example
Good point. Maybe we should change the behaviour for exports. I'll rethink that. Guess we should remove the selection for export types and so on in the widgets and display an overlay with more options instead.
Timo was really keen on this solution a few months ago and I pushed for more simplicity. But it would be a nice improvement and would also clarify the features available for data processing (flat, expanded, limit, search filter, [segment]..)
I believe this is fixed in Piwik where it now exports as many as selected in the dropdown.