The Rogue Paralyzing Poison line should very likely be a 95% snare instead of a root at this point in the timeline.
Lucy shows the effects should be poison counters, 95% snare, 50% slow, and have been unchanged since the initial entry in March 2002:
https://lucy.allakhazam.com/spellhis...42&source=Live
Here on P99, the effects are using poison counters, root and 50% slow. Presumably, that was the effect list on that velious spell effects.dat; however, there is a good reason to believe it switched as part of the June 27th 2001 Patch:
https://everquest.allakhazam.com/his...es-2001-1.html
Specifically, that patch states Paralyzing Poison will no longer break on nukes. This is presumably a problem because it had a root component, which meant that like all roots it would have a break check on damage. To change this behavior, there are a couple approaches that could have been taken, but one of the simplest that would make the poison stop breaking on nukes while appearing to function mostly the same would be to have it fully snare the target enough that it couldn't move. That would make it function like a root, but without the root-specific behaviours like early breaks from direct damage.
Presumably, this change to snare went into effect which explains why it shows as a snare in the Lucy DB scrape from early 2002.