Strg + C versus clipboard

[Nicole]

OP Windows, there is a Richmemo of which I want to copy a text with a handful of lines.

I wrote (onAButtonClick):

Code: Pascal  [Select][+][-]

1. Clipboard.AsText :=RichEdit_Tradeausgabe.Lines.Text;

and found my line-breaks gone after inserting it in a certain software (in other software the line breaks were fine)

ALTERNATIVELY I found:
if I selected the text by the mouse, hit str + c and after str + v
Then the linebreaks were fine even in my special software (Inkscape text tool, but not important)

What can I do, that the clipboard copy (or anything else) behaves like "str + c"?

Thanks

(case this is important: The selection is Win 7, the paste in Win 10)