PowerBI Service - New Filter Experience - Lost setups hide/show filter for visuals

Hi giangn, 

1. We need to go through all reports/visual to choose which one should be show or not again?

The issue that hidden filter still be visible in Power BI service is already fixed: https://community.powerbi.com/t5/Issues/Clicking-on-a-Visual-Always-Displays-All-Fields-in-Visual-Level/idi-p/663531. In your scenaior, if you have the pbix file, which already hide desired filter in new filter pane, you can republish this report to Power BI service. 

2. Can you tell me how to update all reports/visuals to old versions before on PowerBI Service?

Not sure what you mean update reports/visuals to old version. Do you mean open the report in old Power BI desktop version? If it is, you can get old Power BI desktop version here: https://docs.microsoft.com/en-us/power-bi/desktop-latest-update-archive

Best Regards,
Qiuyun Yu