I think you’ve got things a bit backward. All plate solving does is tell the mount where it is actually pointed. So if there’s a difference between where the mount THINKS it is pointed and where the ACTUAL pointing is the mount computer will be synced to the ACTUAL position.
I think you may be confusing two different things. You say that “After plate solving ,which I have successfully done, the next action would be to slew to my intended target after plate solving corrects the pointing.” Plate solving has nothing to do with a pointing model. Again, it just gives the mount an accurate position reading. So what I think you are doing is when you first get the mount and equipment connected and running, you are doing a “solve and sync”. This accurately syncs your mount to the position in the sky.
Completely separate from that is centering on your target. If the location coordinates of your intended target are entered, then when you do a “Center Now” SGP will take an image and plate solve it to tell it where the telescope is pointed, then automatically slew the telescope to the target location (coordinates), take another image and plate solve it. If the resulting plate solve info is still some distance away from the intended location, SGP will slew the mount again. This process is repeated until the mount is centered on your target location.
So the bottom line is you need to enter the target location coordinates in the target settings window. There are any number of ways to do this. In the “Reference Data” line, you can find an image on astrobin or flickr and the info will be filled in automatically (if it’s available with the image), you can load an image you have taken and plate solve it to fill in the coordinates, or you can use the framing and mosaic wizard to automatically create the target coordinates.
OR, like I said above, you can load any image in the main window in SGP, right click and plate solve the image, and then set that as the target coordinates (“location” in the target settings window).