Adding a new url parameter after voting has begun deletes all existing url parameter data

Not sure if this is a bug but I should have at least been warned about the consequences before completing my action. I added another url parameter to my PollUnit after voting began. The reason I did this is in the first batch of participant links I sent to my members, one of the parameters was not correct. In the next batch, I did send the correct parameters that existed in the PollUnit.

I thought if I added the missing parameter to the PollUnit now, then any subsequent participations would collect whichever parameters were received. However, now I see that all parameters have been erased from my voter data. Can you restore my lost url parameter data? If I am not supposed to change this after voting starts, this option should either be locked down so it can't be changed, or a message should be displayed to inform the user of the consequences of making any changes at that point.

Hi Jane,
Can you send the link to your contest to philipp@pollunit.com?
Did you rename a parameter? Then the values do not match anymore to the previous value and cannot be linked.
If you rename them back, the values should be back in place.
Kind regards
Philipp