loosing data after update

[fazil]

hello,

i had updated my cacti 0.8.7a to 0.8.7b on a ubuntu distrib.everything is ok but I lost data from the previous version.how can retrieve and display?
thx

[fazil]

PS: the data are always in the database. when i downgrad cacti to my old version 0.8.7a i can see old graph data.but when its cacti 0.8.7b this is the new data.i can't see the data from the last month for exemple. this is the same database for the two version. (sorry for my english)

[gandalf]

Please describe the exact nature of the problem, e.g. by posting screenshots
Reinhard