If you have the old server still running you can export your datasources/views/reports from the Administration section of Yellowfin.
Using the export functionality.

If you no longer have access to the old version of Yellowfin you may be able to point your new installation to use the old Yellowfin database.

You can change the /Yellowfin/appserver/webapps/ROOT/WEB-INF/web.xml to point to your old Yellowfin database.
Change these settings to match your old Yelowfin database:

[quote]
JDBCDriverClass
com.microsoft.jdbc.sqlserver.SQLServerDriver


JDBCUrl
jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=Yellowfin


JDBCUser
sa


JDBCPassword
password

[/quote]

If you no longer have your old Yellowfin database you may need to recreate all your content.

The JDBCPassword parameter is now stored encrypted by default:

[quote] <!--
Password to the configuration database connection is encrypted at
installation time. If you need to change this password, you can set
the JDBCPasswordEncrypted parameter to false, and store the password
in plaintext in the JDPCPassword parameter.
-->

JDBCPassword
cDahEHuTOrk=


JDBCPasswordEncrypted
true

[/quote]

If you need to change the password, you can change the JDBCPasswordEncrypted parameter to false, and then enter the password in plaintext:

[quote]
JDBCPassword
password


JDBCPasswordEncrypted
false

[/quote]