As I mentioned on the DNA page of procrastination, the end of a nominal Bell Beaker identity in Europe has received much less interest than its origins. While the beginning of the Beakers is exciting and full of debate, its end should be more interesting to those involved in genetics. Cogotas may or may not be an example of cultural continuity, but the continuation of mesetan motifs hints at a stable identity or belief.
As Blanco-Gonzales mentions (others have mentioned this in other regions as well), there are a number of confusing allusions to Beakers in later times. What do you make of a bell beaker dated to a much later period? Or golden beakers?
Another dynamic not mentioned in this paper is the potential influences back and forth between the Irish Channel and the Meseta over a long period of time. (Savory, 1978) Maybe Agaric and British influences shaped the body of Mesetan pottery but not the Mesetan message?
Copying from sherds. Creativity in Bronze Age pottery in central Iberia (1800-1150 BC) Creativity: An Exploration through the Bronze Age and Contemporary Responses to the Bronze Age. Oxbow Books: Oxford. Antonio Blanco-González, 2014 [Link]