Changing nutrient brand mid-flower?

[Greenfing]

Im at week 5 in flower, Ive been using Gold Label Soil A+B from veg, but now im running out and the only importer have stopped selling the product Is there any problems with changing nutrient brand mid flower?
If so, is there any problems with using a new brand + the Roots, PK and MG from gold label?
Can anyone recommend me a brand?

 

[Greenfing]

This have been tried before with no problems;
Switching flowering nutes mid flowering?