Hello
Checked one assembly and found footer in model tree... What is footer in Creo? what is importance of same? How to add this into model?
Footer in model tree is collection of features which will regenerate at the end of regeneration process.
Check details at https://support.ptc.com/help/creo/creo_pma/usascii/index.html#page/fundamentals/fundamentals/fund_six_sub/about_the_regeneration_footer.html