Understanding Society User Support

In UKHLS, variable hsyrbuy is "In what year did you buy or first become the owner of this property?" I want to know the region (gor_dv) of this property, which wave should I use? I list two cases below.

Case 1:
file n_hhresp.dta
n_hidp==206488826 n_hsyrbuy==2021 n_gor_dv==South East n_hsowr11==1
file n_indall.dta
n_hidp==206488826 n_pno==1 pidp==204803087

According to the data in w14, can I consider pidp-204803087 buy the property-206488826 in 2021 and this property is located in South East? However, when I checked the region of pidp-204803087 when this person took interview in 2021 (wave 12), the region was London.
file l_indall.dta
pidp==204803087 l_intdaty_dv==2021 l_gor_dv==London

My question is: the property that pidp-204803087 bought in 2021 is located in London or in South East?

Case 2:
file n_hhresp.dta
n_hidp==206570426 n_hsyrbuy==2017 n_gor_dv==South East n_hsowr12==1
file n_indall.dta
n_hidp==206570426 n_pno==2 pidp==204854227

According to the data in w14, can I consider pidp-204854227 buy the property-206570426 in 2017 and this property is located in South East? However, when I checked the region of pidp-204854227 in 2017 (wave 9)
file i_indall.dta
pidp==204854227 i_intdaty_dv==2017 i_gor_dv==London

My question is: the property that pidp-204854227 bought in 2017 is located in London or in South East?

Thanks.
Shuqi Lyu