trying to unwrap a textbox so the data appears on one line and not several different lines

I am trying to bulk copy data off a excel sheet onto a sharepoint list. I do this by 100 rows at a time, but there are fields that have sevral lines in to cell, which crash my copy in paste into SharePoint.
What I usually do is click on the cell and click backspace so the data comes on to one line, but since there is a a lot of data, this way wont work.
I tried highlighting the cells and click un wrap but it seems that the text is still in separate lines..
Is there a way I can make the text into one line?

Any help or suggestions would be much appreciated.
Thank you

The first image is how the data is, but I want it to be in one line like the 2nd image below....
\1

\1

Hi Martin where would I enter this formula?

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Originally Posted by mrice

I've assumed that your original text is in A1. The formula can go anywhere, B1 for example.

what would be the case if the lines of text are in alot of random cells, how would that work?

anyone have a idea?