Music does not transfer music to my iphone properly.

Hello,

When I drag and drop an album file from the desktop to my iphone. Music (previously itunes) transfers every song as a seperate album instead of as one complete album. The workaround has been to delete the songs after they have been transferred to my iphone, and then reload them again. For some reason, they will load as a complete album the second time. This is incredibly annoying, not only because it is time consuming, and just stupid- but because this problem has persisted for the past five years or so.

But now the problem has actually gotten worse! Now- not only does it still transfer each song as if it were its own album- but the album artwork will not be transferred- nor is there a way to right click to add the artwork. I understand that artwork can only be added into the library- but the library will not allow me to drag and drop recently added albums to my iphone. Previously added albums can be dragged and dropped- just not the most recent albums (ie the albums that I just added to my Library so that I could add their art and put the songs on my phone)!

To clarify-

If I drag and drop music directly from my desktop to my iphone from inside Music, it will:

1) list every song as an album (with the workaround being to delete and add again)

2) will not add any artwork (nor is there anyway to add artwork)

If I try to drag and drop from Library from inside Music:

1) I can add artwork, but cannot transfer to my iphone. Previously added music from my library can be added, just not the most recent.

I simply do not understand why Apple computers are not up to the task of performing this very simple function.

Thanks for any help.