Any other suggestions or ideas to try out regarding how to collect liquidy rosin off of parchment paper?
Go the opposite of what everyone says. If they say freeze it.....You might try putting it in the oven.
Take the parchment and "cup" it so when the rosin heats up and runs, it will all run to one point.
Put it in the oven at anything below 200 - 240F and see if it runs.
If you're smoking it, this might take some taste and terps. If you're going to make it into edibles, you're half way there.
Or, perhaps a hair dryer might work.
I use most of my rosin for edibles and when I out it into the oven to decarb it, it's gets real real runny real real fast.