USCIS’s position is that if the change in employment is “material” then an amended H-1B petition must be filed with USCIS.
For example, if there is a change on job title, significant change in job duties, or a change in work location, then an amended petition will be necessary.
A transfer to a different legal entity within the same corporation would trigger the need to file an amended H-1B petition with USCIS.
The same holds true for raises in salary unless the change is so great that USCIS presumes that the position is really a new one.
Amended H-1B Training petitions are exempt from the USCIS training fee of $750 or $1,500 and the USCIS anti-fraud fee of $500.
The only USCIS fee is the $325 I-129 processing fee.