1.15.2 -> 1.16.1 migration mappings for intellij

1152to1161.xml

<?xml version="1.0" encoding="UTF-8"?>
<migrationMap>
  <name value="1.15.2 to 1.16.1" />
  <description value="1.15.2 to 1.16.1 MCPConfig changes" />
  <entry oldName="net.minecraft.entity.item.minecart.MinecartCommandBlockEntity" newName="net.minecraft.entity.item.minecart.CommandBlockMinecartEntity" type="class" />
  <entry oldName="net.minecraft.util.math.Matrix3f" newName="net.minecraft.util.math.vector.Matrix3f" type="class" />
  <entry oldName="net.minecraft.util.math.Matrix4f" newName="net.minecraft.util.math.vector.Matrix4f" type="class" />
  <entry oldName="net.minecraft.util.math.Vector3f" newName="net.minecraft.util.math.vector.Vector3f" type="class" />
  <entry oldName="net.minecraft.util.math.Vector4f" newName="net.minecraft.util.math.vector.Vector4f" type="class" />
  <entry oldName="net.minecraft.util.math.Vec2f" newName="net.minecraft.util.math.vector.Vector2f" type="class" />
  <entry oldName="net.minecraft.util.math.Vec3d" newName="net.minecraft.util.math.vector.Vector3d" type="class" />
  <entry oldName="net.minecraft.util.math.Vec3i" newName="net.minecraft.util.math.vector.Vector3i" type="class" />
  <entry oldName="net.minecraft.util.math.TransformationMatrix" newName="net.minecraft.util.math.vector.TransformationMatrix" type="class" />
  <entry oldName="net.minecraft.client.renderer.Quaternion" newName="net.minecraft.util.math.vector.Quaternion" type="class" />
  <entry oldName="net.minecraft.client.renderer.Vector3d" newName="net.minecraft.util.math.Tuple3d" type="class" />
  <entry oldName="net.minecraft.util.math.Orientation" newName="net.minecraft.util.math.vector.Orientation" type="class" />
  <entry oldName="net.minecraft.world.ILightReader" newName="net.minecraft.world.IBlockDisplayReader" type="class" />
  <entry oldName="net.minecraft.client.renderer.model.Material" newName="net.minecraft.client.renderer.model.RenderMaterial" type="class" />
  <entry oldName="net.minecraft.util.palette.PaletteArray" newName="net.minecraft.util.palette.ArrayPalette" type="class" />
  <entry oldName="net.minecraft.util.palette.PaletteHashMap" newName="net.minecraft.util.palette.HashMapPalette" type="class" />
  <entry oldName="net.minecraft.util.palette.PaletteIdentity" newName="net.minecraft.util.palette.IdentityPalette" type="class" />
  <entry oldName="net.minecraft.client.renderer.culling.ClippingHelperImpl" newName="net.minecraft.client.renderer.culling.ClippingHelper" type="class" />
  <entry oldName="net.minecraft.entity.passive.PandaEntity$Type" newName="net.minecraft.entity.passive.PandaEntity$Gene" type="class" />
  <entry oldName="net.minecraft.world.storage.loot" newName="net.minecraft.loot" type="package" recursive="true" />
  <entry oldName="net.minecraft.entity.ai.attributes.IAttribute" newName="net.minecraft.entity.ai.attributes.Attribute" type="class" />
  <entry oldName="net.minecraft.fluid.IFluidState" newName="net.minecraft.fluid.FluidState" type="class" />
  <entry oldName="net.minecraft.entity.projectile.Projectile" newName="net.minecraft.entity.projectile.ProjectileEntity" type="class" />
  <entry oldName="net.minecraft.state.IProperty" newName="net.minecraft.state.Property" type="class" />
  <entry oldName="net.minecraft.state.IStateHolder" newName="net.minecraft.state.StateHolder" type="class" />
  <entry oldName="net.minecraft.tags.Tag" newName="net.minecraft.tags.ITag" type="class" />
  <entry oldName="net.minecraft.world.storage.WorldInfo" newName="net.minecraft.world.storage.IWorldInfo" type="class" />
  <entry oldName="com.mojang.realmsclient.gui.screens.RealmsScreenWithCallback" newName="com.mojang.realmsclient.gui.screens.NotifableRealmsScreen" type="class" />
  <entry oldName="net.minecraft.realms.RealmsBridge" newName="net.minecraft.realms.RealmsBridgeScreen" type="class" />
  <entry oldName="net.minecraft.entity.item.EyeOfEnderEntity" newName="net.minecraft.entity.projectile.EyeOfEnderEntity" type="class" />
  <entry oldName="net.minecraft.entity.item.FireworkRocketEntity" newName="net.minecraft.entity.projectile.FireworkRocketEntity" type="class" />
  <entry oldName="net.minecraft.client.renderer.Matrix3f" newName="net.minecraft.util.math.Matrix3f" type="class" />
  <entry oldName="net.minecraft.client.renderer.Matrix4f" newName="net.minecraft.util.math.Matrix4f" type="class" />
  <entry oldName="net.minecraft.client.renderer.Vector3f" newName="net.minecraft.util.math.Vector3f" type="class" />
  <entry oldName="net.minecraft.client.renderer.Vector4f" newName="net.minecraft.util.math.Vector4f" type="class" />
  <entry oldName="net.minecraft.client.renderer.TransformationMatrix" newName="net.minecraft.util.math.TransformationMatrix" type="class" />
  <entry oldName="net.minecraft.client.settings.AbstractOption" newName="net.minecraft.client.AbstractOption" type="class" />
  <entry oldName="net.minecraft.world.dimension.DimensionType" newName="net.minecraft.world.DimensionType" type="class" />
  <entry oldName="net.minecraft.world.gen.settings.Dimension" newName="net.minecraft.world.Dimension" type="class" />
  <entry oldName="net.minecraft.world.storage.FolderNames" newName="net.minecraft.world.storage.FolderName" type="class" />
  <entry oldName="net.minecraft.world.gen.DimensionSettings$Presets" newName="net.minecraft.world.gen.DimensionSettings$Preset" type="class" />
</migrationMap>

For the 2020.1.2-version of IntelJ IDEA COmmunity on Linux, the direcory for me is:
~/.config/JetBrains/IdeaIC2020.1/migration

the migration-folder didn't exist, when was created when i made a test migration in the Refactor->Migration-menu.
Problery works if you just create it your self.