Empty iPhoto Trash and reimport into new iPhoto library
I am SO confused, Please help! I have an iMac with iPhoto version 9.5.1 902.17. The iPhoto library must be corrupted because I have a variety of black thumbnails where I think pictures were, and duplicates of many photos as in more than 3 of many. This happened when I tried to take my MYBOOK photos and upload them into iPhoto. From that point, nothing worked right. I tried to use PhotoSweeper and I think some duplicates were found and deleted. I also notice that I have over 220,000 photos in the iPhoto trash under the "flagged" section on the left side of iPhoto. I do not know where that many came from so I think I need to check and make sure nothing is in there that I want.
I was told by another support person that I should save my iPhoto library, which I did, onto an external hard drive. I see that when I click on it in the external HD, the very same iPhoto library pops up with the same amount of photos where there were in the original (the photos, the trash, and the events, etc).
I was told then to "empty the trash", and that the photos would go to my IMAC trash can in the dock (I think this is what she was telling me). From there, I can create a new iPhoto library, and take the photos emptied in that iMac trash can and reimport them into the new library. It would warn me then if I am adding duplicates and I can then downsize this new iPhoto library.
Is this correct?
Therese
iMac, OS X Mavericks (10.9.5)