How to delete imported list?

[Fendi Aziz]

I have A list, that containing xx,xxx number of subscribers, then i imported 1x,xxx subscribers into same list.. I notice that click/open rate has been drop so i think i want to delete these 1x,xxx subscribers

But how to delete them since it mixed with all the leads in a list?

 

[frm.mwz]

I have A list, that containing xx,xxx number of subscribers, then i imported 1x,xxx subscribers into same list.. I notice that click/open rate has been drop so i think i want to delete these 1x,xxx subscribers

But how to delete them since it mixed with all the leads in a list?

list
subscribers
bulk action from source

 

[Fendi Aziz]

Thanks a lot