Reset the parameters of actors in the scene

hello, i’ve created a C++ actor, wich i’ve positionned in differents parts of my level for PickUp, then i’ve made multiple modifications on the actor in C++.
When i place the actor again in the level with the modifications, everything seems to work fine, but the old actors already placed in the level have not updated to the new modifications and using the previous parameters.
And i can’t modify them in the “details settings”, so i’m forced to delete every actors and replace them one by one.

Is there an easier method to reset the parameters of actors in the scene ?