Originally Posted by kanerf

From the Marriott Website https://members.marriott.com/faq/#wh...ifetime-status

In addition, when you combine Rewards and SPG accounts we will combine your lifetime activity across both toward Lifetime Elite status in the new combined program. Members will have until year-end 2018 to complete stays in order to achieve the Lifetime Elite status thresholds to be grandfathered in at the previous thresholds for Rewards or SPG.

So it appears that you will be able to use your combined nights and points to qualify under the old program rules and get the new LT status, including LTPP.