innodb_force_recovery I did an innodb force recovery. I went from 1-&gt; and on 5 MySQL booted up. I was able to do mydqldump.
Customer is now saying some of data is wrong. (References to another table)
Is this possible?
I did an innodb force recovery.
Customer is now saying some of data is wrong.
Is this possible?

Short answer: Yes.
Any form of recovery can result in data loss.
Using innodb force recovery, you are telling the DBMS to get that database back up and running any way it can, no matter what that means to the data [that used to be] inside it.
Presumably, you did the force recovery because you had a problem with the database or the server that it runs on?
Your first thought should have been to restore your database from your backups (which, after all, only exist to allow you to do exactly that).
Trying to get MySQL to try and piece together something that may or may not be on the disk any more is a Fool's Errand.