Is there a new receipt number for H1 Amendment? NO (Receipt number are only for Visa Change not LCA Changes)
If Yes, will new receipt number be required for h1 transfer? NO if already applied for transfer before Amendment.
I have original H1 copy, when my H1 got approved. Can H1 transfer happen with only initial H1 copy ? Recent H1 Copy as on the date you apply, after applied date let it go whatever no need of new information unless asked by USCIS during the process.