You can read a similar story of the waning days of Mercier, around the same time, with valiant efforts to save the company, workers following the TDF hoping for a win, pinning their hopes on an aging Zoetemelk. Those last race models were superbly made, too. It seems as if everyone was pulling together, with the new owners actually trying to continue making bicycles of the highest quality. Morale was high. At Motobecane the situation looks different. Yamaha was interested in insinuating itself into the Europeean motorcycle manufacturing sector, and the bicycle operations were an awkward part of the acquisition. There must have been conflict and difficulties in producing some of these flagship models.Just read that MBK Industry was registered on 02/01/1984. '82 and '83 looks like a frantic time keeping it going after the bankrupt filing in '81 and organising administrators, structures and investors. '84 seems it's rolling again and re-starting new marketing branding campaigns under the now complete control of MBK Industry, but again starts to trip-up, and Yamaha comes to the complete rescue of MBK Industry presumably because the public sector couldn't / shouldn't / did not want to finance it anymore?
I'm thinking out loud too, looking at catalogues, MBK seemed rather early with BMX, Bi-cross, and MTB and that may have contributed to Yamaha not axing this diverse bicycle business completely and earlier than they did.
From my experience in that country I'd say that will be an English beer.