Summary table volume not reporting first cycle merch

[tharen]

Test test_fvs_fmsc.py, which runs against the upstream FVS test folders, fails due to missing merchantable volume values in the first cycle. This is consistent across variants.

Expected output:

-999   11 S248112                    NONE  0.1100000E+02 SO 04-28-2025 09:55:49 20250401               11
1990  60   613  92  218 144  63  5.2  1825   599     0  2923     0     0     0     0     0  92  218 144  63  5.2      10   55    19    10.0 911 22
2000  70   484 104  229 150  63  6.3  2188  1029     0  4907     0     0     0     0     0 104  229 150  63  6.3      10   57    23    14.7 911 22
2010  80   383 114  235 155  62  7.4  2525  1615     0  7584     0     0     0     0     0 114  235 155  62  7.4      10   56    26    20.2 911 12
2020  90   309 121  237 155  63  8.5  2824  2010     0  9558     0     0     0     0     0 121  237 155  63  8.5      10   56    24    22.3 261 12
2030 100   262 130  243 156  60  9.5  3142  2542     0 12226     0     0     0     0     0 130  243 156  60  9.5      10   60    40    25.4 261 12
2040 110   204 134  237 150  62 11.0  3342  2933     0 14458     0     0     0     0     0 134  237 150  62 11.0      10  581    37    26.7 261 12
2050 120   166 138  233 146  64 12.4  8790  3153     0 15778     0     0     0     0     0 138  233 146  64 12.4      10   49    48    26.3 261 12
2060 130   139 142  231 143  66 13.7  5260  3347     0 16899     0     0     0     0     0 142  231 143  66 13.7      10   49    41    25.7 261 12
2070 140   117 146  227 139  69 15.2  4451  3505     0 17844     0     0     0     0     0 146  227 139  69 15.2      10   43    38    25.0 261 12
2080 150   100 150  225 136  71 16.6  4279  3626     0 18873     0     0     0     0     0 150  225 136  71 16.6      10   40    41    24.2 261 12
2090 160    84 152  221 132  73 18.2  4225  3680     0 19300     0     0     0     0     0 152  221 132  73 18.2       0    0     0    23.0 262 13

Output received:

-999   11 S248112                    NONE  0.1100000E+02 SO 03-11-2026 01:24:40 20250930               11
1990  60   613  92  218 144  63  5.2  1825     0     0  2923     0     0     0     0     0  92  218 144  63  5.2      10   55    19     0.0 911 22
2000  70   484 104  229 150  63  6.3  2188  1029     0  4907     0     0     0     0     0 104  229 150  63  6.3      10   57    23    14.7 911 22
2010  80   383 114  235 155  62  7.4  2525  1615     0  7584     0     0     0     0     0 114  235 155  62  7.4      10   56    26    20.2 911 12
2020  90   309 121  237 155  63  8.5  2824  2010     0  9558     0     0     0     0     0 121  237 155  63  8.5      10   56    24    22.3 261 12
2030 100   262 130  243 156  60  9.5  3142  2542     0 12226     0     0     0     0     0 130  243 156  60  9.5      10   60    40    25.4 261 12
2040 110   204 134  237 150  62 11.0  3342  2933     0 14458     0     0     0     0     0 134  237 150  62 11.0      10  581    37    26.7 261 12
2050 120   166 138  233 146  64 12.4  8790  3153     0 15778     0     0     0     0     0 138  233 146  64 12.4      10   49    48    26.3 261 12
2060 130   139 142  231 143  66 13.7  5260  3347     0 16899     0     0     0     0     0 142  231 143  66 13.7      10   49    41    25.7 261 12
2070 140   117 146  227 139  69 15.2  4451  3505     0 17844     0     0     0     0     0 146  227 139  69 15.2      10   43    38    25.0 261 12
2080 150   100 150  225 136  71 16.6  4279  3626     0 18873     0     0     0     0     0 150  225 136  71 16.6      10   40    41    24.2 261 12
2090 160    84 152  221 132  73 18.2  4225  3680     0 19300     0     0     0     0     0 152  221 132  73 18.2       0    0     0    23.0 262 13