Using 5th ed rules in latest HD

[Snapdragyn]

How do I switch the latest update of HD back to 5th ed rules? My current campaign is in 5th, & unlikely to switch to 6th.

[ghost-angel]

You just choose the Template pertinent to the campaign when selecting a new Character.

You will see options to create characters in Both editions.

If you already have a Character built they will load with the appropriate rules templates.

There's nothing to "switch" in Hero Designer.