how? Mirage 3 and mirage 2K share nothing in common. M2K is FBW unstable delta and Mirage 3 is a stable conventional delta, flight envelope is completely different, stick response is different, aircraft performance is completely different. Mirage Rose crews will have similar transitional learning curve if you replace the Mirage 3's with a Jf17 or J10, or f16 or mirage 2K. The difference is as stark as getting a completely different aircraft despite the commonality in 6 alphabets
Not just flight crews, maintenance crews, logistic planning.. etc etc.
The only people who will NOT have a problem are pilots on deputation to the UAEAF.. and there may be what? 10..15 of them over a 5 year period. Not enough to form a squadron. Then who is to maintain the mirages?