CFR form history has invalid or Zero fee "Estimate values" on VOLUME section

**Describe the bug in current situation**
Create a CFR Fee estimate Form-= Say V1, with estimates on VOLUME section and go for applicant payment . then after payment from applicant , enter actuals. Then observe the CFR History, we can see "Zero" under that section, - actually there were values on fee estimate of VOLUME - but it shows as 0

Version 1 active form value for VOLUME ESTIMATEs


Version 1 HISTORY form value for VOLUME ESTIMATEs
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**Chance of Occurring (high/medium/low/very low)**

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**Actual/ observed behaviour/ results**

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No files, tests, or entry points are named. Start by reproducing the CFR fee-estimate flow with VOLUME estimates, then compare the active form values with the CFR History after applicant payment and actuals are entered. Done means the history shows the original VOLUME estimate values instead of zero.

Written by the indexing model from the issue text.