Unable to transfer the whole amount over to Uphold

Hi, in brave://rewards/ says I have 314 BAT (all from ads and also running the up to date version) but when I click on withdraw funds it directs me on the Uphold wallet page where says I have only 73 BAT. Seems that i might have been affected by Bug Bug Notice: BAT disappearing from balance after upgrade to Brave v1.3
How can I resolve this issue and transfer the full amount?
Regards