There is a Q&A that does not exactly fit to your situation as it applies to Berserkers:
A4.61 & A15.43 If a squad Assault Moves, is fired on and becomes Berserk, do they immediately gain (8 minus the normal MF spent to enter the hex they entered using Assault Movement) MF to use in a Charge?
A. Yes. [Compil1]
If the same underlying priciples would not only apply to Berserkers but also to Inexperienced Personnel that Battle Hardens, then I would say it does get the additional MF back.