My mistake, the longitude and latitude info was incorrect for my location :( Hence it didn't show the Slew To button.
However, IC 1805 (the heart nebula according to Stellarium) returns the Cassiopeia Objects Group. Not the Heart nebula. This object type is "Open cluster" not "Nebula"
NGC 1795 returns the Dorado objects group.. Not the nebula..
I'm confused ..