How to find Hidden sprites?

I created several sprites in cocos studio (2.3.2) and in order to remove clutter I unchecked the “visible” checkbox.
I continued my work and now there is now apparent way to reselect them in order to make them visible!
Do i miss something ?
Is there a way to find them and re make them visible ?

(i can manipulate them alright with code, so the sprites are there …)

Ok,

I found out how to fix it.
You have to edit the actual .csd file with a text editor and remove the

VisibleForFrame=“False”

parameter from each node