Endpoint manager basefile for Grandstream DP750 incorrect

Bug in the basefile for Grandstream DP750 in endpoint manager.

Handset (DP722) registered to base DP750, but had no line assigned to it. Assigning the line in the DP750 web interface worked fine, handset worked fine, until basestation restart where it pulled the config back from endpoint manager and overwrote the line assignment - it set it back to none.

After a bit of a config comparison, discovered the following:

Basefile in endpoint manager says P code 4300 is the Acct 1 Hunt group and is hard set to "0"
Similarly, 4301, 4302 and 4303 say they are the Account 2, 3 and 4 hunt groups.

Looking at my working config downloaded from the basestation, and at the grandstream config docs,

P4300 is the handset 1, account 1 line setting, not hunt group.
P4301 is the handset 1, account 2 line setting
P4302 etc etc
P4310 is handset 2, account 1 line setting

and so on.

My workaround fix is easy of course, I just edited the basefile, so all is good, but it would be nice to have a better default in the endpoint manager basefile and the commenting is wrong as well.

Relevant section from the DP75x config from Grandstream:

##################################

1. 1. DECT/Handset Line Settings ##
      ##################################

#Handset Line Settings
#HS 1 Line Settings
#Number: 0 - 10, according with None and account 1 - 10. First line Default is 1 (account 1), other line have default is 0 - NULL.
P4300=1
P4301=0
P4302=0
P4303=0
P4304=0
P4305=0
P4306=0
P4307=0
P4308=0
P4309=0

#HS 2 Line Settings
#Number: 0 - 10, according with None and account 1 - 10. First line Default is 1 (account 1), other line have default is 0 - NULL.
P4310=1
P4311=0
P4312=0
P4313=0
P4314=0
P4315=0
P4316=0
P4317=0
P4318=0
P4319=0

#HS 3 Line Settings
#Number: 0 - 10, according with None and account 1 - 10. First line Default is 1 (account 1), other line have default is 0 - NULL.
P4320=1
P4321=0
P4322=0
P4323=0
P4324=0
P4325=0
P4326=0
P4327=0
P4328=0
P4329=0

#HS 4 Line Settings
#Number: 0 - 10, according with None and account 1 - 10. First line Default is 1 (account 1), other line have default is 0 - NULL.
P4250=1
P4251=0
P21320=0
P21321=0
P21322=0
P21323=0
P21324=0
P21325=0
P21326=0
P21327=0

#HS 5 Line Settings
#Number: 0 - 10, according with None and account 1 - 10. First line Default is 1 (account 1), other line have default is 0 - NULL.
P21328=1
P21329=0
P21330=0
P21331=0
P21332=0
P21333=0
P21334=0
P21335=0
P21336=0
P21337=0