For all types of secured loans, the funds record for the amount of the loan is attached to the secured account when a loan is created (either CD, share draft, or share account).
For CD-secured loans, this record is set to last the life of the loan and the secured funds are not released until the loan is paid off. If a member makes monthly payments on the CD-secured loan, the secured amount is not lowered.
However, for a share- or share-draft-secured loan, the secured amount is gradually released as loan payments are made, which matches the default behavior when pledged share records are created by a credit union employee in CU*BASE.
A credit union employee can change this setting on the loan by manually using Tool #51 Miscellaneous Loan Maintenance, then Pledged Shares.