The issue maybe down to the adapters not supporting Master and Slave settings.
Note that the A1200 has no settings for master and slave. Ideally the 44 pin built in IDE connector is only designed to support 1 x HDD.
The 4xIDE adapter is a Buffered 4 way IDE card. But again only 1 x Master can boot from this. The rest of the ports get activated later on by the use of Software drivers from the drivers disk.
As for file transfers, why not use the PCMCIA port with a PCMCIA adapter to CF card? Or are you wanting to use tha for something else?