You can't just duplicate "everything". You should really duplicate only the basic, then duplicate one by one what you need and link the things by yourself.
In short, you should duplicate only the main actor of the sentry. Then duplicate its abilities, then the effects linked to the abilities, make sure everything is linked correctly and then you're good to go to change something. I guess it needs some practice to get it correct... eh. xD
You can't just duplicate "everything". You should really duplicate only the basic, then duplicate one by one what you need and link the things by yourself.
In short, you should duplicate only the main actor of the sentry. Then duplicate its abilities, then the effects linked to the abilities, make sure everything is linked correctly and then you're good to go to change something. I guess it needs some practice to get it correct... eh. xD
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