This is all very strange. I have version 1.9 (1.9.32.0.8) and yet this exploit no longer works for me. It did, however, work pre-1.9. What is your actual game version in which this is currently working? I have heard of some people downgrading in order to create these items and then re-patching, but that is not what is explained here. I primarily came to this thread for confirmation that the exploit does, indeed, work in a post-1.9 environment (thinking that there was a modification to the original exploit process), but the process has not changed and yet the exploit isn't working any more (for me). Thanks.
Update: I have not confirmed this yet, but it appears as though the latest version (1.3.2c) of the Unofficial Skyrim Patch (USKP) mod is the cause of this particular issue (for me).
A post from in the forums at Skyrim Nexus Mods covers this.
Update 2: I have now confirmed that the latest version of USKP (1.3.2c) is indeed the cause of my woes. I have since downloaded and installed a particular 'fix-fix' mod to counteract USKP's interesting fix. That mod is "
Revert Fortify Restoration Fix of the Unofficial Skyrim Patch" (version 1.1). I should mention that I find it interesting that there is no particular mention of this 'repair' in the
USKP change log. According to a later post from the first link previously given, the author of USKP acknowledged what had been done and did not appear to like the topic. At any rate, I hope this resolves others' problem(s).
As one last re-iteration (clarification) of the solution: feel free to use USKP (if you have, or have not, been), but if you wish for the "Fortify Restoration Exploit" to continue working, be sure to download the "Revert Fortify Restoration Fix..." and be sure that it loads after USKP. I have confirmed all that I have mentioned previously. Take care.