There’s no definite way to create Archive and Post templates. It all depends on your structure. But, we do recommend using a Block Element – Content Template or Loop Template if you want to extensively modify the Blog and Archive Pages. As for single Pages/Posts, it’s not conventional to use Content Templates here. We usually recommend using other types of Block Elements to build up single Posts/Pages.
As for your second inquiry, no, this isn’t normal behavior. If you directly copy and paste the templates single.php
, content-single.php
and if you prefer, archive.php
, Elements should still work. With this said, did you make any edits to your CPT template files?