No, apologies - a bit of background.
For my first visa I applied for FLR(M) even though my husband was in the military, thinking that he would change jobs. Still in the military now, but if I had applied for FLR(AF) the first time I would have been given a 5 year visa rather than 2.5. So it was suggested in here to go ahead and apply for FLR(AF) with an explaination as to why, and perhaps they will grant the next one for 5 years. Just realising that I've left out the IHS surcharge in the letter - which I did get refunded.
Here is the original advise from ksand24 if this helps: I think what I'd probably do is apply for FLR(AF), but include a letter of explanation regarding the fact that you have a normal spousal visa and paid the IHS last time, but that he has actually been in the Armed Forces for all this time, and that really, you should have applied for the VAF(AF) spousal visa instead... and then see what happens. They may just grant the FLR(AF), or they may allow your current visa to be retroactively changed to the 5-year Armed Forces spousal visa.