First Person Shooter C++ Tutorial BUG

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In that section it says, (NOTE: There is an additional step required as a workaround to an current issue we are looking into. To be able to find the FirstPersonMesh in the component list, you will need to delete the BP_FPSCharacter blueprint and recreate it. After doing this you can continue with step 4.)

I am using UE 4.5.0 Source and i saw that problem to. I am new to unreal engine and ue4 c++ programming and learning it. So i just want to know what kind of problem is that. Right now the blueprint was small so it was easy to just delete and create it in few minutes, but if it had more data then is there any workaround it so i don’t have to recreate the blueprint again ?