How to swap a same-size(and dimensions) part trough savefile editing

[Sungazer]

Hey guys, I spent 8 hours building a very complex spaceplane that get's launched by two rockets taped to it's belly and back. After aligning everything properly I found out that I used the mk3 Fuselage with liquid fuel and oxidizer instead of the liquidfuel one.

If I have to take her apart to replace this part I will lose many hours of tweaking and testing so it would be really great if you guys can explain how to properly swap out the parts trough savefile editing. A simple find&replace notepad job didn't do the trick.

[robertlong13]

I did a test with find/replace and it worked for me. Be sure to change the information under "RESOURCE" for that part.

1) Delete the "O" in "mk3FuselageLFO.50_XXXXXXXXXX". (Do not change the trailing number)

2) Change

    RESOURCE
    {
        name = LiquidFuel
        amount = 2250
        maxAmount = 2250
        flowState = True
        isTweakable = True
        hideFlow = False
        flowMode = Both
    }
    RESOURCE    
    {
        name = Oxidizer
        amount = 2750
        maxAmount = 2750
        flowState = True
        isTweakable = True
        hideFlow = False
        flowMode = Both
    }

to

    RESOURCE
    {
        name = LiquidFuel
        amount = 5000
        maxAmount = 5000
        flowState = True
        isTweakable = True
        hideFlow = False
        flowMode = Both
    }

- - - Updated - - -

Sorry, I just noticed how old this post was. I did not mean to necro.