Now, that's nice
If it's possible, it's always best to remove the old LED from the PCB completely then slot the new one in. The old solder joints can be undone with a 'solder sucker' a suction device that looks a little like a big hypodermic or some de-solder braid. The braid is put on the solder joint, iron applied, and the braid absorbs the old solder.
The danger with soldering a new LED to the old LED 'legs' is that if you apply too much heat, the old legs may lose their solder and they may 'float' in the old PCB 'hole' meaning they won't make contact.
But, whatever, it worked, so all power to you