Ok, After some more tinkering I think I found out what was wrong.
In the Master_Pickup_BP, where the (Pickup Able) variable lives. I think something bugged on the level download and the default value of (pickable able) was displayed as false when it was actually set to true.
I discovered this by changing it manually to true, compiling and testing it out. Doing this made the collectable I made work as expected. Back in the Master_Pickup_BP, I switched (Pickup Able) default back to false and NON of the collectables were being destroyed. After switching it back to true, all of the collectables were being destroyed including the one I made.
I think my editor was bugged and the checkbox for (Pickup Able) appeared fasle when in the background it was actually set to true.