Ja...ich hab auch grad gegoogelt...
Having a pending application for a provisional unlawful presence waiver or an approval of such a waiver will NOT:
Grant you any benefit or protect you from being removed from the United States.
Allow you to apply for interim immigration benefits such as work authorization or advance parole.
Guarantee you will be issued an immigrant visa.
Guarantee your admission into the United States by U.S. Customs and Border Protection.
Give you a legal immigration status.
Change the requirement that you must depart the United States in order to obtain an immigrant visa. NOTE: Until your approved unlawful presence waiver takes full effect, USCIS may reopen or reconsider its decision on the Form I-601A at any time.
Reasons Your Provisional Waiver May Be Revoked
Your approved provisional unlawful presence waiver is automatically revoked if:
DOS ends the immigrant visa application process.
USCIS revokes the underlying approved immigrant visa petition (Form I-130 or Form I-360).
The consular officer at the U.S. embassy or consulate determines that you are inadmissible on grounds of inadmissibility other than unlawful presence.
You reenter or attempt to reenter the United States without being inspected and admitted or paroled, before or after your provisional unlawful presence waiver is approved or before your immigrant visa is issued.