Them's the rules I'm afraid, I am in the same situation, what can you do, nothing.
I did a 340 course with CX and on it was a BA guy who was looking after our a/c somewhere. He was issued with an approval by a JAR145 approved organisation (BA) he got the type rating on his EASA 66 on conversion from a BCAR. I did not as mine was only issued by a HKAR 145 organisation, same course to ATA 104 level 3 but not recognised by JAR/EASA/CAA.