Congrats! Often stressing these vines will trigger them to bloom like mad so they produce seed (a survival mechanism) and having them potbound does stress them!

I have a Moonflower (Angel Trumpet) that I had to transplant into a large pot because of a recent move. Got 2 nice blooms on them that lasted one night then they shriveld and are going to the seed stage is that normal to bloom only one night? Should I keep the other seed pods on the plant till they drop off themselves? I have 2 other smaller plants in a vase of water because the stems were accidently cut by a shovel I made a angled cut and slightly scraped the edge of the cuts to encourage root growth they have been in a vase for a week so far and seem to be ok but when can I place them in soil? Will they eventually root? I am a avid plant lover and so far have had a zero death toll on any plant I start from seed! Any help or advice is appreciated, Sincerly Mark

moonflower vine flowers ONLY last ONE night.Thats it. Just like Morning glory flowers only last one morning, then shrivel up and the seed starts forming quickly. Same with Moonflowers.
Do you let the seeds fully ripen before collecting? Also Moonflowers seeds need to be soaked in water before planting. Hope this helps.