Ken Self replied to the topic 'Comet Leonard in KStars database?' in the forum. 5 months ago

When I installed 3.5.6 the comets.dat under App Data\Local\kstars was still dated 31/5/2021. Some files had been shifted across to App Data\Roaming\kstars but comets.dat was not one of them
I uninstalled 3.5.6 then re-installed 3.5.3 and Leonard reappeared.