Hide in Songbook doubt

[rickyrey]

When MTU released the Hoster version that included that feature I was very happy cause I thought that it could save me a lot of time and effort doing my catalogs. I remember I spent lots of nights doing the edit click-hide in songbook. Then another version of 4 came out and I switched laptops when I was about to print my catalog, all my work was gone. I was mad as &^%$. Never tried the feature again. Until now. I have too many new releases to keep my last year songbook so I tried the hide in songbook again. When I was in about 1/4 of my catalog the left hinge of my main laptop broke. (HP had to recall a lot of them). I tried to continue the work using yet another laptop and the external disk where I stored all my KMA's. What a surprise once again, not a single song was excluded as hide in songbook, all the info gone but this time I started to mark hide in songbook along with another language, like someone suggested to me and the language info is not gone.

How come this is still happening?
Does it mean that Hoster affects the KMA file when you change language but it does not when you select hide in songbook?
I mean, Does Hoster hold that info in the computer that you are working the hide in songbook but not in the KMA file?
Is this is the case, how can I recover that info from the previous laptop?