diff --git a/inferium-gui.lua b/inferium-gui.lua
index 758a5dd..97ac931 100644
--- a/inferium-gui.lua
+++ b/inferium-gui.lua
@@ -12,6 +12,10 @@ end
 
 
 local function formatSeedName(essenceName)
+  if not essenceName then
+    return false
+  end
+
   return 'mysticalagriculture:' .. essenceName .. '_seeds'
 end
 
@@ -125,6 +129,60 @@ local function createCountersMap(harvesters)
   return getCountersMapFromIndexed(countersMapIndexed)
 end
 
+local function pickSeedNameFromCountersMap(countersMap)
+  local newCountersMap = {}
+  local pickedCounterName = nil
+
+  for k, counterPayload in pairs(countersMap) do
+    local count = counterPayload.count
+    local name = counterPayload.name
+
+    if not pickedCounterName and count > 0 then
+      pickedCounterName = name
+      count = count - 1
+    end
+
+    local newCounterPayload = {
+      count = count,
+      name = name
+    }
+
+    newCountersMap[k] = newCounterPayload
+  end
+
+  return formatSeedName(pickedCounterName), newCountersMap
+end
+
+local function preparePayloads(countersMap, maxCounter, harvesters)
+  local payloads = {}
+
+  local globalCounter = 1
+  local configIndex = 1
+  for _, harvester in pairs(harvesters) do
+    local newConfig = {}
+    payloads[configIndex] = { id = harvester.id, config = newConfig }
+
+    for k, _ in pairs(harvester.config.plan) do
+      local seedName, newCountersMaps = pickSeedNameFromCountersMap(countersMap)
+      countersMap = newCountersMaps
+      newConfig[k] = seedName
+      globalCounter = globalCounter + 1
+      if globalCounter > maxCounter then
+        error('preparePayload fatal error: globalCounter is greater than maxCounter')
+      end
+    end
+
+    configIndex = configIndex + 1
+  end
+
+  return payloads
+end
+
+local function saveAllConfigs(payloads)
+  -- TODO
+  return false, "not implemented"
+end
+
 local function main(serverName)
   net.openRednet()
   print('> fetching all configs from ' .. serverName)
@@ -134,7 +192,18 @@ local function main(serverName)
   local maxCounter = getMaxCounter(harvesters)
   local countersMap = createCountersMap(harvesters)
   local countersMapResult = CountersSelector(countersMap, getCountersSelectorConfig(maxCounter))
-  print(textutils.serialize(countersMapResult))
+
+  local payloads = preparePayloads(countersMapResult, maxCounter, harvesters)
+
+  print('> saving...')
+  local saveOk, saveErrMessage = saveAllConfigs(payloads)
+
+  if saveOk then
+    print('> done.')
+  else
+    error('Cannot save configs because: ' .. tostring(saveErrMessage), 0)
+  end
+
   net.closeRednet()
 end