In the editor, is there any way to clear all terrain improvements (irrigations, roads, etc.) from the map?

I have a scenario I made in the beggining of the 20th century, now I want to clear all the terrain improvements so I can make a scenario in the ancient age, cant have irrigations all over the world :egypt:
I have a version of the map without the improvements, but I made many changes to the map in my 20th century scenario, changes I would like to keep in the new one, would be a bit difficult to re-do all the changes I did.

Anyone? :(

I answer to let you know we care but as far as I am concerned, no way. That's why I always do palin map then other versions with resources, etc...

Guess we could use a 3rd party utility that could do it, Gramphos?

its easy to clear terrain improvements+ resources from a map.

Ex: you want to clear irrigation, go to the editor and make irrigation impossible on plains, grassland etc, then all the irrigation will disappear.

Its not that hard.

Oh my! Its so simple! LOL
That worked! Thanks Yoda!!! :)