compatibility of existing plugin with latest WP version

how to save data if plugin if not working with latest wp version

[Sachet]

Hi

I want o update my wordpress to its latest version but I cannot update existing plugins related to meta data of my post.

My question is if I remove this plugin; my all existing metas will be lost?

[not2easy]

The more important question is what if you don't update WP. You can check your plugins here: [wpvulndb.com...] and while there you can see that recent versions have several security flaws:

2017-02-01 WordPress 4.7.0-4.7.1 - Unauthenticated Page/Post Content Modification via RE...
2017-01-26 WordPress 3.5-4.7.1 - WP_Query SQL Injection
2017-01-26 WordPress 4.2.0-4.7.1 - Press This UI Available to Unauthorised Users
2017-01-26 WordPress 4.3.0-4.7.1 - Cross-Site Scripting (XSS) in posts list table

so updating become crucial no matter what happens to your metas.

What I would do is to save a backup of the current database (either manually or with a plugin) and then update to 4.7.2 and then see about taking care of the meta data.

[ergophobe]

Generally, the data should be stored in either the post_meta or in a custom table for the plugin. If you disable the plugin and then remove the files, it should leave tables intact and so that data is still there. How you access it will be another question