Whatsapp changed the country code to most contacts

[Android Central Question]

I had whatsapp in Canada. I moved to South America and changed phone numbers. What'sapp ported over about 30 contacts properly and about 100 were missing. When I type in search Contact I see them but now their numbers appear like this +593 1905xxxxxxx but some from Canada are perfect. I don't know why it did that I don't know how to fix it. Yes my country code now is 593 but why leave some and change some. I vanished on my canadian contacts pages and they vanished on mine. They can't message me I can't message them. BUT the few that show on my contacts from Canada work perfect.
Also forgive me. I'm not a whatsapp fan so not very experienced with it.

 

[mustang7757]

[Moved to WhatsApp forum for better visibility]

 

[mustang7757]

'll leave a Link to register so you can communicate here as a guest account you can only post questions but can't reply.
https://forums.androidcentral.com/showthread.php?t=409154

 

[Javier P]

Welcome to the forums. Most likely you had those contacts saved as local numbers, without the +1 code for Canada. When you switched the SIM card the phone and WhatsApp converted them to your new local +593. I don't know of any automatic way to change numbers in bulk, I'm afraid you'll need to add manually the +1 to those contacts that are wrong now.