You'll need to use an augmentation dissolver. It will destroy the augmentor & the attached gizmo's (so you can't save the perks), but you'll get the weapon back unscathed.
If the item could degrade though you get a broken variant of it that you'd need to repair using an augmentation dissolver.
When the day becomes the night and the sky becomes the sea, when the clock strikes heavy and there’s no time for tea; and in our darkest hour, before my final rhyme, she will come back home to Wonderland and turn back the hands of time.
If you remove the augments then no the weapon would no longer collect xp and would lose the ranks it has. That wasn't the initial query though. Did you want to siphon the weapon to collect the invention xp from the ranks? If that's what your looking for then an
equipment siphon
is what you need.
When the day becomes the night and the sky becomes the sea, when the clock strikes heavy and there’s no time for tea; and in our darkest hour, before my final rhyme, she will come back home to Wonderland and turn back the hands of time.
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If I use an augmentation dissolver, will I still get invention XP on my leveled weapon?
If you are only interested in getting Invention XP, you can use an Equipment Siphon on your Sara Sword rather. You will get less Invention xp but you get to keep your target equipment.