DFIVX invests in "developed markets" (essentially the opposite of "emerging markets").
VTMGX invests in developed markets.
VEMAX invests in emerging markets.
So if you want to keep your portfolio as similar as it was before, you should transfer DFIVX money to VTMGX.
But if you're asking this question, it suggests that your previous portfolio might have been created without full knowledge of what you were investing in. If that's true, then there might not be a ton of value in simply attempting to copy what you had before. You should determine what you want your asset allocation to look like, and then select the funds in your new 401(k) that best fit that allocation.