I have experience with this, though we are in the states so things are probably different here. My story:
dfd was not yet legally free, but the permanency plan had become adoption and the case looked like it was starting to wrap up. In January of that year, the social worker told us to gear up for a termination trial in the spring. In March or April, I ended up being offered two jobs that were on the other coast. The social worker encouraged me to go ahead and accept an offer. We had a TPR trial date for a month or two down the line, I wouldn't be starting my job for another five months, and everything looked like it would be wrapping up.
I accepted my job. Then the trial was continued, and wasn't rescheduled for another six months. The department determined that even though it wasn't in my dfd's best interests to be separated from me (especially since dfd had attachment challenges), that they couldn't let her move until after the trial. I had to move and be without my kids who stayed in our old state with dw, and it was truly one of the lowest times of my life. Awful. We couldn't sell our old house, so I couldn't even afford to rent or buy or set up a home in anyway for us in our new state. I stayed with some of dw's family, and dw and the kids would visit every month or two. We spent a ton of money trying to get by with the travel, etc., and eventually I started renting. Finally the trial happened, and termination was ordered. But though the social worker felt confident the mom wouldn't appeal, she did. While we waited for the appeal, the department at some point consented to dfd staying in the new state for longer and longer periods, and then eventually to moving.
The interstate compact process took a very long time, and thus did the move. Finally dw and the kids joined me permanently in our new state, but the appeals process is still not done and dfd is still with us as a foster kido.
We lost tons and tons and tons and TONS of money through the ordeal, dfd was retraumatized by the experience and we've had to go into major therapy mode, and both kids had a very difficult time. Not to mention that it was one of the most painful experiences of my life.
Some factors that may impact your ability to move include:
1. What is the official permanency plan?
2. Are visitations still being provided? If so, how frequent are they and can you reasonably travel to them from your new province?
3. How close is the case to resolution?
4. How confident is the social worker that s/he knows the direction the case is headed?
5. What is the reason for the move?
6. What does the social worker see as the impact on the kids that would happen if you moved without them?
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