Adding to POI or removing first?

.Removed need more research

It should overwrite. But...

You could load both since they have different names. You will just have 2 files of the same data.
Mahoney does the one here and he is good at keeping it updated. In fact if you look at the download page he just updated it on 5-14-12. He used the PA site and has verified a lot of the locations to be correct.

The trouble we see with a company list is that they are mass geocoded and they are usually way off in the coordinates. My bet is the one on poi factory will be better.

If the .gpi files have different names, then each will exist and you will have doubles.

If you load all your POI files with POI Loader in one shot, then all prior files will be overwritten by whatever you choose to upload at this particular time (unless you renamed the original .gpi file before this load).

Hope that helps

This works for me.

You can eliminate the double POI's but it will be time consuming.

Open the .csv file using Windows Excel.
Then do a sort on coordinates.
Print out the sorted file.

Do this to both .csv files and compare to identify the duplicate entries. Delete the duplicate entries
in either of the two files and save them both with the different file names.

Delete both POI files from your Nuvi, then use POI Loader to create new .gpi files and send them to your device. You will now have both files without duplicate entries.

Thanks for asking this question JK, I have thought about this same thing myself.

Open the combined file in Extra_POI_Editor, and click on 'Find Duplicates'.

No sorting, printing, searching... S--t can the one with less information and move on.

A bonus: EPE will let you merge .csv and .gpx POI files to check for dupes.

That surely is a time saver, however, I interpreted jkconey's (OP) as indicating he had separate files and not merged.

I suppose he can merge the files with POILoader then use Extra POI Editor to remove the duplicates, that still would be faster than the method I described.

he is trying to figure out which is the better poi.
That's my opinion.

OK I'll take your word for it. I have no experience with the creator, and most don't go back and edit stuff. Thanks!