Time machine was not working.  I bought a new time machine and migrated time machine files to new time capsule; not recognized by yosemite

Time machine was not working after yosemite upgrade on new and old MacBooks in my house.  I bought a new time machine and migrated time machine files to new time capsule. I changed the names of the older sparse bundles to the default values.  Yosemite still does not recognize them. 

I presume the bought a time machine means a time capsule.
How did you migrate the Time Machine files?
From where? A Time Capsule or external drive?
It is difficult to get TM working with Yosemite.. since it doesn't work after the upgrade on the old TM backup.. it will not work on the migrated files either.
You simply start a new backup and store the old backups for a few months until you are ready to dump them.
The instructions for inheriting old backups is B5 and B6 here.
http://pondini.org/TM/Troubleshooting.html
However it is just unlikely to work.. TM in Yosemite is very different. Broken even.
I also strongly recommend people to use Carbon Copy Cloner or some other 3rd party backup until Apple get the bugs fixed. And after several months.. they are still rampant.

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