diff --git a/src/modules/symba_classes.f90 b/src/modules/symba_classes.f90
index cf6872846..c16644b1d 100644
--- a/src/modules/symba_classes.f90
+++ b/src/modules/symba_classes.f90
@@ -194,14 +194,13 @@ module symba_classes
 
    type, extends(swiftest_storage) :: symba_encounter_storage
       !! A class that that is used to store simulation history data between file output
-      type(symba_io_encounter_parameters) :: nc    !! NetCDF parameter object
-      real(DP), dimension(nframes)        :: tvals !! Stored time values for snapshots
+      class(symba_io_encounter_parameters), allocatable :: nc    !! NetCDF parameter object
+      real(DP), dimension(nframes)                      :: tvals !! Stored time values for snapshots
    contains
       procedure :: dump   => symba_io_encounter_dump !! Dumps contents of encounter history to file
       final     :: symba_util_final_encounter_storage
    end type symba_encounter_storage
 
-
    type :: symba_encounter_snapshot
       !! A simplified version of a SyMBA nbody system object for storing minimal snapshots of the system state during encounters
       type(symba_pl) :: pl         !! Massive body data structure
diff --git a/src/setup/setup.f90 b/src/setup/setup.f90
index ea6d3db23..e95505b9b 100644
--- a/src/setup/setup.f90
+++ b/src/setup/setup.f90
@@ -68,7 +68,6 @@ module subroutine setup_construct_system(system, param)
             allocate(symba_pltpenc :: system%pltpenc_list)
             allocate(symba_plplenc :: system%plplenc_list)
             allocate(symba_plplenc :: system%plplcollision_list)
-            allocate(symba_encounter_storage :: system%encounter_history)
          end select
       case (RINGMOONS)
          write(*,*) 'RINGMOONS-SyMBA integrator not yet enabled'
diff --git a/src/symba/symba_io.f90 b/src/symba/symba_io.f90
index a4e5a9922..c5ed78f2a 100644
--- a/src/symba/symba_io.f90
+++ b/src/symba/symba_io.f90
@@ -384,7 +384,10 @@ module subroutine symba_io_start_encounter(self, param, t)
       class(symba_parameters),    intent(inout) :: param !! Current run configuration parameters 
       real(DP),                   intent(in)    :: t     !! Current simulation time
 
-      if (.not. allocated(self%encounter_history)) allocate(symba_encounter_storage :: self%encounter_history)
+      if (.not. allocated(self%encounter_history)) then
+         allocate(symba_encounter_storage :: self%encounter_history)
+         allocate(symba_io_encounter_parameters :: self%encounter_history%nc)
+      end if
       call self%encounter_history%reset()
 
       ! Empty out the time slot array for the next pass
diff --git a/src/symba/symba_util.f90 b/src/symba/symba_util.f90
index 41fd746ad..b66fe7ed1 100644
--- a/src/symba/symba_util.f90
+++ b/src/symba/symba_util.f90
@@ -955,6 +955,7 @@ module subroutine symba_util_resize_storage(self, nnew)
             nbig = nbig * 2
          end do
          allocate(symba_encounter_storage(nbig) :: tmp) 
+         call move_alloc(self%encounter_history%nc, tmp%nc)
          tmp%tvals(1:nold) = self%encounter_history%tvals(1:nold)
          tmp%tvals(nold+1:nbig) = huge(1.0_DP)
          if (lmalloc) then