New
#11
What version of WLM are you running?
On my system - WLM 2012 the contacts db is in DBStore under a system protected folder Default
%userprofile%\AppData\Local\Microsoft\Windows Live\Contacts\Default\DBStore
close WLM
move everything in the DBStore folder to a new folder outside the WLM tree (ex: Downloads\WLM_Contacts\DBStore)
copy your "backup" clients.edb to %userprofile%\AppData\Local\Microsoft\Windows Live\Contacts\Default\DBStore
It would be better if you had the entire folder as A Guy noted, but see if WLM will rebuild the structure having only the clients.edb
Launch WLM
no joy?
close WLM
resart your system
launch WLM