Crazy characters in code after import from another document (Word or eq.)

Hi folks,

did this appear  to anyone of you in former times?

I'm  fairly new to CNC and brandnew to LinuxCNC (MiniMill 2.9) and I needed a 'warmup_routine' for my machine, so I used the help of AI and generated a file to my purpose.
I imported the code to my Windows editor and saved the file as <name>.ngc.
I wrote shorter files on my own in g-code in advance, saved them, transfered them to the machine and opened them: they worked from the first second.

As I tried to open the g-code with the AI generated parts, I recieved absolute trashed characters in the code, the complete code was unreadable!

When I opened this file with the 'gedit' from Linux, everything looked fine...

Anyone of has some ideas, tipps or solutions?

Greetz

Freddie