TT5/6 predicament

[Guest mikeact]

Do you reckon I could run both TT5 and 6 on the same device? Problem is that on my travels I have a load of overseas maps running on 5 and I am loathe to pay more money to duplicate them all for 6. Basically when, eg, I am in Australia, I'll use 5, and back in the UK switch to 6. Feasible ?

[Guest NightFox]

Do you reckon I could run both TT5 and 6 on the same device? Problem is that on my travels I have a load of overseas maps running on 5 and I am loathe to pay more money to duplicate them all for 6. Basically when, eg, I am in Australia, I'll use 5, and back in the UK switch to 6. Feasible ?

I know that when I installed 6, it removed 5 without giving me any option of keeping it, but not sure what would happen if I tried re-installing 5 on top of 6. Have you tried asking TomTom?