Illustrator reinterprets lines and breaks them into small pieces
I have line art that may have been created in an older version of Illustrator or perhaps in PPT. When I open it in the latest version of Illustrator, the lines are broken into numerous small sections. Curves that were made with three anchors now have 30. Text that was in a singular text box is now broken into several text boxes with some breaks coming in the middle of words. How can I stop this from happening? Or what is the easiest way to fix it? Thank you!

. And if it does break, then just redraw. Thank you.