diff --git a/bld/namelist_files/namelist_defaults_ctsm.xml b/bld/namelist_files/namelist_defaults_ctsm.xml
index cac69edf02..a984b538c2 100644
--- a/bld/namelist_files/namelist_defaults_ctsm.xml
+++ b/bld/namelist_files/namelist_defaults_ctsm.xml
@@ -1319,8 +1319,8 @@ attributes from the config_cache.xml file (with keys converted to upper-case).
 <finidat hgrid="0.9x1.25"  maxpft="79"  mask="gx1v7" use_cn=".true." use_cndv=".false." use_fates=".false."
          ic_ymd="18500101" sim_year="1850" do_transient_pfts=".false." use_excess_ice=".false."
          ic_tod="0" glc_nec="10" use_crop=".true." irrigate=".false."
-         lnd_tuning_mode="clm5_0_GSWP3v1" use_init_interp=".true."
->lnd/clm2/initdata_esmf/ctsm5.2/clmi.I1850Clm50BgcCrop-ciso.1366-01-01.0.9x1.25_gx1v7_simyr1850_c240223.nc
+         lnd_tuning_mode="clm5_0_GSWP3v1"
+>lnd/clm2/initdata_esmf/ctsm5.3/clmi.interp_from.I1850Clm50BgcCrop-ciso.1366-01-01.0.9x1.25_gx1v7_simyr1850_c240223.nc
 </finidat>
 
 
@@ -1389,11 +1389,17 @@ attributes from the config_cache.xml file (with keys converted to upper-case).
 </finidat>
 
 <!-- This is the same file as above but, for a different tuning mode -->
+<finidat hgrid="1.9x2.5"    maxpft="79"  mask="gx1v7" use_cn=".true." use_cndv=".false." use_fates=".false."
+         ic_ymd="20110101" sim_year="2000" do_transient_pfts=".false." use_excess_ice=".false."
+         ic_tod="0" glc_nec="10" use_crop=".true." irrigate=".true."
+         lnd_tuning_mode="clm5_0_GSWP3v1" use_init_interp=".false."
+>lnd/clm2/initdata_esmf/ctsm5.3/clmi.f19_interp_from.I1850Clm50BgcCrop-ciso.1366-01-01.0.9x1.25_gx1v7_simyr1850_c240223.nc
+</finidat>
 <finidat hgrid="1.9x2.5"    maxpft="79"  mask="gx1v7" use_cn=".true." use_cndv=".false." use_fates=".false."
          ic_ymd="20110101" sim_year="2000" do_transient_pfts=".false." use_excess_ice=".false."
          ic_tod="0" glc_nec="10" use_crop=".true." irrigate=".true."
          lnd_tuning_mode="clm5_0_GSWP3v1" use_init_interp=".true."
->lnd/clm2/initdata_esmf/ctsm5.2/clmi.I2000Clm50BgcCrop.2011-01-01.1.9x2.5_gx1v7_gl4_simyr2000_c240223.nc
+>lnd/clm2/initdata_esmf/ctsm5.3/clmi.f19_interp_from.I1850Clm50BgcCrop-ciso.1366-01-01.0.9x1.25_gx1v7_simyr1850_c240223.nc
 </finidat>
 <finidat hgrid="1.9x2.5"    maxpft="79"  mask="gx1v7" use_cn=".true." use_cndv=".false." use_fates=".false."
          ic_ymd="20110101" sim_year="2000" do_transient_pfts=".false." use_excess_ice=".false."