As of Creo Parametric 3, M120, tables do not retain text formatting. Which means that, even if the user formats the entire table, each time text is entered it will have to be formatted separately, significantly decreasing productivity.
PTC, please allow tables to retain formatting for entered text.
Article - CS94103 Creo Parametric does not remember the Text Style set for a note or table cell in drawing mode. The Style Name in Text Style tab of Note Properties dialog is always shown as Default