Hi Hitpawz,
I wasn’t able to reproduce this in 4.6.1. Which version of engine are you using? What type of project is this (third person, 2d side scroller, etc)?
You wouldn’t be able to delete components on a child that belong to parent, so not being able to delete them makes sense. I’m not sure if there’s a problem with inherited spring arms, however, without more details. If you would like to create a sample project in which this occurs and upload it somewhere, I can take a look and see where problem is. Thanks!