diff --git a/migrations/10-from-realistic-reactors.lua b/migrations/10-from-realistic-reactors.lua
new file mode 100644
index 0000000..875428b
--- /dev/null
+++ b/migrations/10-from-realistic-reactors.lua
@@ -0,0 +1,126 @@
+local function get_subs(entities, matchers)
+	local subs = {}
+	for _, entity in pairs(entities) do
+		for name, matcher in pairs(matchers) do
+			local matches
+			if type(matcher) == "string" then
+				matches = entity.name == matcher
+			else
+				matches = matcher(entity.name)
+			end
+			if matches then
+				if subs[name] ~= nil then
+					error("Duplicate entity for "..name)
+				end
+				subs[name] = entity
+			end
+		end
+	end
+	for name, _ in pairs(matchers) do
+		if subs[name] == nil then
+			error("Missing entity for "..name)
+		end
+	end
+	return subs
+end
+
+local function Signals() return { parameters = { -- signals for interface
+	["core_temperature"  ] = {signal=SIGNAL_CORE_TEMP,    count=TEMPERATURE, index=1},
+	["state_stopped"     ] = {signal=SIGNAL_STATE_STOPPED,          count=1, index=2},
+	["state_starting"    ] = {signal=SIGNAL_STATE_STARTING,         count=0, index=3},
+	["state_running"     ] = {signal=SIGNAL_STATE_RUNNING,          count=0, index=4},
+	["state_scramed"     ] = {signal=SIGNAL_STATE_SCRAMED,          count=0, index=5},
+	["coolant-amount"    ] = {signal=SIGNAL_COOLANT_AMOUNT,         count=0, index=6},
+	["power-output"      ] = {signal=SIGNAL_REACTOR_POWER_OUTPUT,   count=0, index=7},
+	["uranium-fuel-cells"] = {signal=SIGNAL_URANIUM_FUEL_CELLS,     count=0, index=8},
+	--["used-uranium-fuel-cells"] = {signal=SIGNAL_USED_URANIUM_FUEL_CELLS, count=0, index=9},
+	["efficiency"        ] = {signal=SIGNAL_REACTOR_EFFICIENCY,     count=0, index=10},
+	["cell-bonus"        ] = {signal=SIGNAL_REACTOR_CELL_BONUS,     count=0, index=11},
+	["electric-power"    ] = {signal=SIGNAL_REACTOR_ELECTRIC_POWER, count=0, index=12},
+	["neighbour-bonus"   ] = {signal=SIGNAL_NEIGHBOUR_BONUS,        count=0, index=13},
+} } end
+
+local function find_reactors()
+	local reactor_max_power, reactor_max_efficiency
+	local formula = settings["global"]["realistic-reactors-calculate-stats-function"].value
+	if formula == "ingo" then
+		reactor_max_power = 123
+		reactor_max_efficiency = 200
+	elseif formula == "ownly" then
+		reactor_max_power = 250
+		reactor_max_efficiency = 210
+	else
+		error("formula missing")
+	end
+
+	local reactors = {}
+	for name, surface in pairs(game.surfaces) do
+		for _, reactor_entity in ipairs(surface.find_entities_filtered{name={REACTOR_ENTITY_NAME, BREEDER_ENTITY_NAME}}) do
+			local p = reactor_entity.position
+			local subs = get_subs(surface.find_entities({{p.x-1.5, p.y-1.5}, {p.x+1.5, p.y+1.5}}), {
+				entity = reactor_entity.name,
+				core = function(name) return string.match(name, "realistic%-reactor%-%d+") end,
+				interface = E2I_NAME[reactor_entity.name],
+				eccs = BOILER_ENTITY_NAME,
+				power = POWER_NAME[reactor_entity.name],
+				lamp = function(name) return string.match(name, "rr%-%w+%-lamp") end,
+				light = function(name) return string.match(name, "rr%-%w+%-light") end,
+			})
+			local reactor = {
+				id = subs.entity.unit_number, -- ID of the reactor (doesn't change)
+				core_id = subs.core.unit_number, -- ID of the core (changes when core is replaced)
+				core = subs.core, -- core entity
+				interface = subs.interface, -- interface entity
+				eccs = subs.eccs, -- eccs entity
+				power = subs.power, -- power entity
+				entity = subs.entity, -- displayer entity
+				position = subs.core.position, -- core position = reactor position
+				state = 0, -- reactor state
+				state_active_since = game.tick - TICKS_PER_UPDATE, -- state begin
+				neighbours = 1, -- number of connected reactors and itself
+				control = subs.interface.get_or_create_control_behavior(), -- control behaviour for interface signals
+				efficiency = 0, -- reactor efficiency
+				bonus_cells = {}, -- list of bonus cell amount for breeder
+				cooling_history = 0, -- average power loss through cooling in the last TICKS_PER_UPDATE*8 ticks
+				lamp = subs.lamp, --reactor lamp dummy
+				light = subs.light, --light dummy for the lamp
+				interface_warning_tick = 0, --last tick an electricity warning was displayed on the interface (for imitating the game's behaviour)
+				interface_warning = nil, --electricity warning dummy (interface)
+				cooling_warning_tick = 0, --last tick an electricity warning was displayed on the cooling
+				cooling_warning = nil, --electricity warning dummy (cooling)
+				power_usage = {starting = 0,cooling = 0, interface = 0}, --portions of the power consumption
+				last_states_update = game.tick - TICKS_PER_UPDATE,
+				fuel_last_tick = 0, -- fuel value in the core on last tick
+				--fluid_amount_last_tick = 0, -- fluid amount in eccs on last tick
+				power_output_last_tick = 0, --power output in MW on last tick (only updated in start or running phase)
+				last_temp_update = game.tick - TICKS_PER_UPDATE,
+				max_power = reactor_max_power, --dynamic maximum value for gui
+				max_efficiency = reactor_max_efficiency, --dynamic maximum value for gui
+				signals = Signals(),
+			}
+			for _, saved_signal in pairs(reactor.signals.parameters) do
+				local real_signal = reactor.control.parameters[saved_signal.index]
+				if (real_signal.signal.type ~= saved_signal.signal.type) or
+						(real_signal.signal.name ~= saved_signal.signal.name and saved_signal.index ~= 8) then -- 8 is fuel, it may differ
+					error(string.format("Can't migrate signal %d (expected %q:%q, got %q:%q)",
+						saved_signal.index, saved_signal.signal.type, saved_signal.signal.name, real_signal.signal.type, real_signal.signal.name))
+				end
+				saved_signal.count = real_signal.count
+			end
+			reactor.control.parameters = reactor.signals.parameters
+			if reactor.signals.parameters["state_stopped"].count == 1 then
+				reactor.state = 0
+			elseif reactor.signals.parameters["state_starting"].count == 1 then
+				reactor.state = 1
+			elseif reactor.signals.parameters["state_running"].count == 1 then
+				reactor.state = 2
+			elseif reactor.signals.parameters["state_scramed"].count == 1 then
+				reactor.state = 3
+			end
+			reactors[reactor.id] = reactor
+		end
+	end
+	return reactors
+end
+
+global.reactors = find_reactors()
diff --git a/readme.md b/readme.md
index e345631..755fbaa 100644
--- a/readme.md
+++ b/readme.md
@@ -2,14 +2,7 @@ Forked from RealisticReactors due to bugs.
 
 #### Migration from RealisticReactors
 
-Migration from RealisticReactors is not fully supported yet, however you can still try:
-
-1. Blueprint all your reactors. Make sure all the circuit connections are in the blueprints.
-2. MAKE SURE YOU HAVE ENOUGH BACKUP POWER.
-3. Stop and remove all built reactors.
-4. Disable RealisticReactors, enable this mod.
-5. Place reactors back.
-6. Start the reactors. This is where the backup power is necessary.
+Migration from RealisticReactors is partially supported. Reactors should work, however intermediate states (starting or stopping) may not work as expected. Cooling towers should work, though visuals may glitch. Other buildings weren’t tested yet.
 
 #### Original description