Importing Fixed assets with AA

We have a new customer where we are using Analytical Accounting in GP2013. We have 5,000 FIxed Assets to Import but wish to set the correct Dimension Codes to be used with each of the Distributions for each Asset.

• The GP Import utility for FA does not include AA information.
• The eConnect does not  include an ability to set the distributions or Dimension Codes for an assets, merely setting the account Class.

We are using SmartConnect so can import all the assets, but cannot see a way to set the Dimension codes for each asset.

Any ideas on how to resolve would be appreciated..