Given the volatility in the equity, commodity and junk bond markets thus far in 2016, investors are repositioning their portfolios for both safety and growth going forward.
This question is calling for a somewhat subjective answer.
What I would recommend is liquidate now, since it is a stock fund and stocks have performed very well this year, no need to be greedy and hope that they do as well in 2014.
By the way, this Principal account (if it matters) was an old 401k that I converted to an IRA after I left the company I was with that offered the 401k. There are no tax related issues however because you don't pay cap gains or write off the losses in your ira. If you don't do it within that time frame, then yes, there will be taxes and early withdrawal penalties. In the lingo of the mutual fund type firms like Schwab, Fidelity, Vanguard etc they say "liquidate" to main LITERALLY "make the assets CASH".
Most firms do charge a termination and or transfer fee when you leave and those can range from 50.00 to 100.00 each The "Money" may be in Principal only Mutual Funds or 401K only Class of a Mutual Fund, that can not be transferred. This is the STANDARD way to deal with these sorts of transfers unless the firms have reciporcity of accounts OR you have shares held "in street" so that they are transferable.