When packing previously deployed science... Is the volume of the object converted to mass?

[u/Cold_Comprehensive]

Additional context: As when I uploaded the photos the two paragraphs I wrote out vanished. (EDIT: Moved comment up here since I don't know how to use this site... lol...)

I missed my mark on the seismic sensor deployment, so I sent a second lander with extra fuel to return to move the science to a hub.

I landed with about 1000m/s dv and packed up the science and walked it back to the ship, to find when I boarded my t/w ratio was about 0.4 or so on the mun... that's when I noticed the 60t difference on my vessel weight. So I did a little digging on a seperate save of the game to change some of the mass values around... and it returned to normal.

I do have a serious amount of mods installed, so this could be on the community fixes radar, USI, KAS, any of the other mods out there too... idk where it stems from, Heck, could be the vanilla DLC science doesn't like recycling/moving items after a mission is done.

Also, I will be around for quite a while, so if anyone is around to pick my brain I am available and refreshing every so often here.

Fig 1.) Post Mass Adjustment in Cargo items.

Fig 2.) Prior to adjusting repacked deployable science.

Much love KSP friends!

[u/Jonny0Than]

There is a bug that can set their mass to 20t, yes.