Quote:
I assume from version info that you are using iGO Gift 9.18.27.687519 - 26.jan.2017, so your question should be posted in that thread.
Next, you should read Truck support in NG versions.
I think (not sure) that iGO Primo Nextgen(Israel) 9.18.27.687519 (Jan 26 2017) (OP), which has best truck support, calculates such route and only gives you a warning about violating restrictions.
If that doesn't work, then temporarily change vehicle to "Bus" with same dimensions.
P.S.
I've tested few such situations (restricted area for trucks) in my region and NG Israel with "Truck" profile gives only warnings about restriction violations, but calculated routes are total nonsense.
Best results were with "Bus" profile.