Bot generates all join logs twice

[jaredlyon]

The bot currently generates all join logs twice, yet only generates single leave logs, despite both snippets of code being functionally identical:

[jaredlyon]

events/guildMemberAdd.js:

var Discord = require('discord.js');

exports.run = (bot, member) => {
    if (member.guild.id == '461738525768024075') {
        var channel = member.guild.channels.cache.get("465742371670327296");
        var join = new Discord.MessageEmbed()
            .setAuthor(member.user.username, member.user.avatarURL())
            .setFooter(member.guild.name)
            .setTimestamp()
            .setTitle('Member joined!')
            .setColor(3447003);

        channel.send({
            embed: join
        });
    } else if (member.guild.id == '479856759184424990') {
        var channel = member.guild.channels.cache.get("479916795671609345");
        var join = new Discord.MessageEmbed()
            .setAuthor(member.user.username, member.user.avatarURL())
            .setFooter(member.guild.name)
            .setTimestamp()
            .setTitle('Member joined!')
            .setColor(3447003);

        channel.send({
            embed: join
        });
    } else {
        return;
    }
}

events/guildMemberRemove.js:

var Discord = require('discord.js');

exports.run = (bot, member) => {
    if (member.guild.id == '461738525768024075') {
        var channel = member.guild.channels.cache.get("465742371670327296");
        var leave = new Discord.MessageEmbed()
            .setAuthor(member.user.username, member.user.avatarURL())
            .setFooter(member.guild.name)
            .setTimestamp()
            .setTitle('Member left!')
            .setColor(3447003);

        channel.send({
            embed: leave
        });
    } else if (member.guild.id == '479856759184424990') {
        var channel = member.guild.channels.cache.get("479916795671609345");
        var leave = new Discord.MessageEmbed()
            .setAuthor(member.user.username, member.user.avatarURL())
            .setFooter(member.guild.name)
            .setTimestamp()
            .setTitle('Member left!')
            .setColor(3447003);

        channel.send({
            embed: leave
        });
    } else {
        return;
    }
}```

[jaredlyon]

I literally have no idea what's causing this issue; for the sake of versioning I'm going to push the v2 update (#5) ahead and fix this in a future patch/update.