Originally Posted by
EFB123
if what you're saying is true.
Did you take "ICAO" ATPL tests? Did you pass an "ICAO" practical test? Did you start your conversion process with a CAA ATPL? Assuming yes, yes, no.
Your ATPL is not converted from anything.
In FAA Land if you use FAR 61.75 to get a piggy back Private, you can use that Private to get a real, independent Commercial. It's no longer dependent on the validity of the previous-Private's source document.
Go do ATP. "I have an "ICAO" ATPL and would like to get an FAA ATP." Don't say a word about anything behind that. What you have is legit. But don't give anyone an excuse to wonder and go research.
What is your plan to do the conversion?