Mass upload of level member for newly created Item Level

Hi Experts,

We have created a new product level using Configure level option. Now we wish to update the level with its corresponding members. Right now there is only one default level member available in the level table t_ep_new_level which is the default value. I know we have the option of using method to create the new level member but there are more than 20K level members to be created, hence this option is not suitable.

Is there any way we can create the new level member through some script? Or can we use the insert script to insert the level member value directly in the level table t_ep_new_level?