I am using a trial version of Dopus 12.6x64 and have saved column settings to a default lister before.
Now, when I save file name, size, dimensions they are saved, but my previous default lister settings are used.
I have tried it several times with the same results.
Saving the Default Lister will not usually affect file display columns.
To change the default file display columns, set things as you want them to be, then:
Open Folder > Folder Options:
Then click Save and select Save format for all folders (make this the default):