Well, i finally got all of my movies and tv scarped and then i added them to my Kodi library that i have on my desktop to see if everything looks good before putting them on my Raspberry Pi.
Today, i had to redo some artwork myself and added them by just removing the old artwork and replacing them.
I had one poster in a movie folder "puss in boots" PUSS IN BOOTS (2011)-poster. i got a better looking poster and named it the same, but once that i reloaded it in the kodi library, it still shows the old poster. What's up with that.
I had another movie and replaced the poster "Dutch (1991)-poster. I reloaded the movie in the kodi library and it did good.