Hi,
The auto populate respects the filters, and unfortuantely that is not possible to change, it is a hard-coded feature. The best way to resolve that is to set the filters to the desired defaults.
“But we need all events under particular meta field and not in any date range” – I’m not sure what exactly do you mean by this. There is a possibility to set a ‘hidden’ type of custom field filter, if you want to display events only that match a certain meta field value.