Galaxy S6 :: Cut And Paste From Received Message?

I got a text message from an agency I work for giving me details and the address of a contract I was due to start that night. I'd also reeived and set up my s6 the previous day and went to cut and paste the postcode from the received message into googlemaps searchbar like I'd done millions of times before on my old HT desire hd. It would not let me bring up the cursor tool to select just the postcode so I had to copy the whole text of the message. Inconveinent but okay I'll just delete what I don't need. Pasted this into googlemaps searchbar and begun to delete the excess text. First the stuff and the end of the text message then off to the beginning... hang on?? there is no way of getting to the beginning of thetext to delete the excess there. I couldn't point as the searchbar scrolls along and there is no left or right arrow on the keypad to move across. I couldn't believe it! I'd been doing this fot years on myHTC Desire hd and that as like 4 years old!

Maybe I'm missing something so I played arounda little more and discovered the clipboard but couldn't find a way to edit I'd copied here either?? I called my network provider and they didn't have any answers so gave me samsungs number who I phoned and also seemed to have no answers??? Really I don't get how the cursor used to select the required text is available everywhere else but in received messages?? It was there in email, there in composing texts, there on the web??

cutting and pasting a postcode from a received text message into googlemaps should not be this much hardwork or at least it wasn't on my HTC