You used Insert $>$ Text $>$ Object to insert data from an Excel worksheet into a Word document, but when you open the Object in Excel, the data you had updated in Word did not transfer over. The most likely cause was...

a$.$

You went to Insert $>$ Text $>$ Object $>$ Object $>$ Create from File $>$ Browse and found the file to insert. You clicked Insert but you forgot to click Link to file before clicking OK$.$

b$.$

The Excel worksheet was protected and could not be imported into the Word document.

c$.$

You went to Insert $>$ Object $>$ Text $>$ Text from File instead of selecting Object $>$ Object $>$ Create from File.

d$.$

The source file was open and you linked it to the destination file.