Registration of converted SG to XG workaround - regular registration of license does not work if only basis license is left in original SG license file

We've had a serious problem with the registration of a converted SG 230

There seems to be an error in the registration webpage of converted SG when the original SG license only has the basis license still valid.

We had the original license file of the device. Only the basis license is without expiration date, All the other licenses had expired.

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

[LicenseInfo]
Owner = XXXXXXXXXXXXXXXXXXXX
Id = XXXXX
LicenseString = f27c737133XXXXe7950d8f96a6d58e7
Revision = 1

[LicenseOptions]
Type = SG230
RegistrationDate = 10/28/2013
ExpirationDate = Never
LicenseMode = ondemand
UserLimit = 9999
ConcurrentConnections = 999999
Special = None
SiteWideLicense = OFF
ClusterNodes = 0
OEM = off

[NetworkSecurity]
Start = 10/28/2013
Stop = 10/28/2020

[WebSecurity]
Start = 10/28/2013
Stop = 10/28/2020

[MailSecurity]
Start = 10/28/2013
Stop = 10/28/2020

[WebApplicationSecurity]
Start = 10/28/2013
Stop = 10/28/2020

[WirelessSecurity]
Start = 10/28/2013
Stop = 10/28/2020

[StandardSupport]
Start = 10/28/2013
Stop = 10/28/2020

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72YAn3nNM58knVvet6X2/gQgi3ZpggAI
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After conversion we tried and importing the license into the registration wizard.
Any way we tried, it always came back to the same error page. A page without any exit or back button.

There was no way to register the device.
We tried skipping the registration but when we treid importing the file after registration we landed exactly into the same page.

Solution is to login to the MySophos portal, select the "Register new device" and enter the serial number of the converted device.
That unlocks the basis license for the device.

After logging into the device's GUI the license had synchronised and all was well.