Please help- uploading iphone images & Images from digital card and they're hidden or disappearring

Ohmy Gosh..Houuurrrrss later, what could have been a fun one hour edit of a fantastic shoot day has become a 6 hour, unsuccessful backache session, uploading and re uploading images only to repeatedly discover that hundreds of the images are randomly becoming hidden.  I shoot with my iphone and I shoot on a Canon withh a basic digital card.  Why is this happenning?  Does anyone know?  Does it have to do with icloud being live on my laptop?

I just want to:

1. upload the digital card to my laptop into a folder

2. Upload the iphone images into the same folder

3. Use Bridge to edecide which ones to keep and finalize, and delete the rest

It isnt working anymore.  I used to be able to work this way, but it has been a long time since I shot.

Lastly, Why on Earth do we not have a cut and paste button on bridge, anymore.  The dragging feature doesnt work that well.  I wish (so badly) they'd allow is to cut and paste.