LPS-44862  "Link to Page" field's getUrl method doesn't work properly

Hi Máté,

as we discussed it earlier, I'm sending this pr to you first, so you can check the changes related to the Export/Import process.

If it passes your review, could you please forward this pr to @marcellustavares? Or just let me know if the changes are alright, and I'll forward it to him.

Thanks,
Tamás