How to do new Silicone

so this is probably a dumb question, but if it's the silicone holding it all together, and I scrape all of it off, won't all the sides fall away from each other?
 
There is also silcone holding the glass butt joints together, you don't want to use too much solvent or remove the plastic frame or it all could fall apart. The inner seals is what you'll be replacing not the structural support.
 
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