About Version Compatibility

Is any problem occurs if we use java client server 7.0.0 and selenium 3.149.59 on appium server 2.5.4. in existing project. If so please suggest me am unable to conclude.

Maybe better migrate to newer java-client version?
In such case check GitHub - appium/java-client: Java language binding for writing Appium Tests, conforms to W3C WebDriver Protocol