The official document states that your solution supports Psd/PSB for both input and output.
And, there was also some code snippet for this.
But when I tried it, it didn’t work at all To export Psd/PSB from PSB.
I …...Exporting to PSD/PSB from PSB file doesn't work Aspose.PSD Product...that your solution supports PSD/PSB for both input and output...