I found out the 8GB micro SD card I was using was slower than the one that the DNX6180 came with from the factory.
The factory one had a 4 stamped on it, 4MB a second. The one I was using had a 2 on it so only good for 2MB per second.
I found a 64GB micro SD card with a 10 on it, good for 10MB per second. Also wont have to worry about running out of space on it.
Tomorrow I plan to test it out and make sure the DNX6180 can work well with it (no size limitations I hope). If there is a size limit I can try to partition it to a smaller size.
Right now I have 8MB in FAT, and around 59.4 GB in exFAT.

Thanks to your help I have the base map updated, and the time zone map updated. I found the most recent JCV files and downloaded them, 1.6GB download for two files. Wow.
I added cars/beachballs etc, from my Nuvi to this SD card I am building for the DNX6180 too. Just wanted to see if they will work, and why not if I have so much extra room on the card.

I have nothing in my PNX folder but found out they are phone numbers for looking up points of interest. Supposedly so you can enter a number and find the place from its number. Kind of backwards, I don't think I will ever use that feature if it works that way.

This DNX6180 has lifetime live traffic, I see there are different versions and read that version 2.80 was the newest for North America (it goes up to 4.40 but all the updates past 2.80 are for other countries).

Now as far as backing up my favorites, I hit a dead end there. My unit doesn't have any GPX files. It must save Favorites to another folder. It might be a .db file. I found one called user_strings.db and was viewing it in a program I downloaded (SQlite) but it still looked confusing to me. I will have to look into that more.

The larger 64GB SD card with the speed rating of 10 works well, no problems. Edit, I am now running an 8GB card and it all fits.
I put what was in my original SD card PNX folder in the PNX folder of the new SD card. Probably dont even need it.
The spell function used in points of interest and other places is still slow but always was anyway, I believe it is just a design flaw since it has to search a lot of files to give you a suggestion when you type a letter or two in.
My Favorites are still in there after updating everything, I'm planning on writing down all my favorite addresses in a notebook and then I will try a reset to see if anything seems to change like the spell function slowness.

I am happy to say that I do have the current North American 2022.25 map working in my Kenwood DNX6180. This would not have been possible if it were not for this forum and the users/moderators on here. So thanks!

If I did not remove and install a larger SD card, I would have had to learn about map compression or would have had to download a map someone else modified. The couple of guys that posted on here about there DNX6180's must have used modified maps or the older maps may have been smaller back then. I still want to learn about map compression and how to use Basecamp $ Mapsource so I will look into them in the future.
Also I would like to learn about how the PNX files are made (I hear they are specific to each map set? if I am wording it correctly).