Columbia Management Group plans to merge another four Columbia Funds into three Nations Funds as part of the consolidation process following Bank of America's acquisition last year of former Columbia parent FleetBoston Financial, said John Yiannacopoulos, spokesman. Subject to shareholder approval, the $273.9 million Columbia Fixed Income Securities Fund will merge into the $1.9 billion Nations Bond Fund; the $1.89 billion Columbia Growth & Income Fund and the $72.4 million Columbia Tax Managed Value Fund will merge into the $1.76 billion Nations Value Fund; and the $64.2 million Columbia Municipal Money Market Fund will be merged into the $6.1 billion Nations Municipal Reserves Fund. The goal is to reduce the mutual fund lineup to between 85 and 90 from 120 over the course of this year, Mr. Yiannacopoulos said. So far, about 20 funds have been merged. Portfolio managers working on the four merged funds will remain in place, he added. Columbia has $316.1 billion in assets under management.