The text is probably in a text box. Text created with the Text Box tool 
and placed on top of an object isn't attached to the object. It won't move or rotate with the object.
- To attach text so that it becomes part of the shape, click the shape and type or paste the text.
- To group the text box and object so that they move as a single unit, hold down SHIFT as you select the text box and the object, and then click the Group Objects
button
.
Note Text cannot be flipped, even when it is attached to the shape. If you want to flip text, for example, to create a mirror-image effect, use WordArt and then flip it.
When I select a text box and start typing, the existing text isn't replaced with what I type.
To replace text in the text box, select the text