AutoCAD Architecture :: Converting Over From CTB To STB?

While in the drawing I want to convert I started with CONVERTCTB, the dilague box appears and I selected my current CTB plotstyle (the one I use to do my regular plots with) and upon accepting it another dialogue box appears asking me to name the new STB plotstyle. I did so and a message came up informing me the conversion was successful.

I then typed CONVERTPSTYLES and a message comes up followed by the dialogue box where I am to select an STB file. Here I selected the file I created in the CTB conversion in the previous step.

The conversion seemed to work correctly but when I go into the layer properties manager the plotstyles all have the same named style ie style 1, when I select one of these plotstyles to change it all except 3 styles are noted as missing.

I read that when I complete the conversion I should have plotstyles with old_pen_01 etc.

I have attached a snap shot of the resulting layer manager. The active plotstyle is the one that was converted during the CTB process ie the first step above