Moving number between Sky SIM cards

[bellies75]

we have a family sky mobile account which includes a SIM data plan on an iPhone 11 which my daughter used. 

My daughter wished to have her own account so she  purchased a new iPhone14 and sim data package via Sky. 

She received the new phone and put the old SIM card into it as she wishes To keep her number.

When I called Sky to stop the data plan they said she could not transfer her existing number to the new Data package. 
The caller did say we could do it but it would involve first buying a pay as you go from a different network!!! Till we got a pac number. 
I feel if she had gone to another supplier it would have been much simpler 

there must be an easier way ?? 

[PandJ2020]

Indeed, you cannot transfer numbers within a network.

Unless they will apply the offer to the existing SIM then the only option is to port it out of the network and back in again.

[caesarome]

It is not possible to use a Pac code to transfer a number from within the same network so the only option is to transfer it to a PAYG network then back to her own account.

[bellies75]

Ok Can the SIM card /package be moved from our account to my daughters ? 

[caesarome]

It isn't possible to move a sim from one account to another one which is why you would need to do what I posted earlier and use a Pac to move it to a PAYG network and then get another Pac to transfer it to her Sky sim.

[PandJ2020]

...and to add that the Piggybank can't be shared between accounts.  (Only SIMs on a given account)