It seems that Quicken treats a Roth IRA as a standard IRA for the Lifetime Planning module. Is that correct ?
While Roth balances are included under the IRA tax deferred line in the plan summary tables, they are indeed treated separately.
Have a look at this thread for some insight on how LTP treats Roth IRAs. I've done some testing and illustration here.
Also, have a look at and vote on an IDEA post below to separate the Roth IRA from the Trad. IRA in the summary tables.