Filters conditions are missing

Out of a sudden I found conditions are missing in the filters created in the dashboard.
Is there a way to retrieve these filters as it’s not possible to recreate all the filters from scratch.

Try just reselecting the data source name that’s showing in your screen shot. Sometimes that happens to me, and if I just reselect the data source name in the filter, it comes back.

But if you created a filter to be applied to one data source, then changed the element that uses it to another data source, the filters break and you’ll have to recreate them.